Didnt Think This Through / Fan Works

People not thinking things through in Fan Works.

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The following works have their own pages:

• Harry Potter and the Magic of the Beasts
• Metal Gear: Green

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Crossovers

Crossovers

• And Hell Followed After Him: Cologne and her co-conspirators Mousse, Kuno, and Ryoga send Ranma to Hell since she feared he was growing too powerful. None of them considered that he might be strong enough to come back and go on a Roaring Rampage of Revenge.
• Ranma points out to Homura in Anything Goes Game Changer that his decision to work at a host club to find his Ashikabi is more flawed than he realized. While it does allow him to meet a fair number of women, after some time it'd be mostly repeat customers. Furthermore, there are many women who don't go to such clubs for either moral or financial reasons.
• Avengers: Infinite Wars:
  • When Tony Stark tries to recruit Luke Cage and Danny Rand for the Avengers after most of the other members have vanished by copying Nick Fury's lines upon their first meeting, Luke and Danny point out that the existence of the Avengers means that they both already know about the "bigger world" they're becoming part of. Jessica later accuses the two of them of not considering the consequences of becoming Avengers, as it puts a larger target on their backs, but the two are relatively nonchalant about it as they reason their identities were already fairly public anyway.
  • During the campaign against Queen Zalem on Dathomir, Wanda Maximoff uses her powers to sever the bonds between the rancors and their riders, but this results in large, wild, enraged animals rampaging through the battlefield and indiscriminately killing both sides before they are killed.
• In Between My Brother and Me: Mors Omnibus Yusho Sakaki never thought past "going to stop Professor Akaba by dimension hopping" so many, many things have gone horribly wrong. 1) The machine transplanted him in Carroll City (another world) and three girls dumped him into Xyz. 2) He never trains the kids to defend themselves and gets his leg busted by Edo before being flung into Fusion. 3) He never said his farewells to his wife and son and never prepared any contingency plans for what would happen if he was gone for so long so now Yoko has financial problems and his son has psychological ones. 4) He went by himself without any help and had no way to communicate with Reiji about his status. 5) Even if he made it to Akaba, there would be no way this man would back down and Yusho was probably going to be carded for his efforts. There is a reason why every single person who brings it up tells Yusho that he is an idiot.
  • When in Carroll City, Yuzu tells Mieru to find Yusho. But Yuzu forgot to ask for Mieru's phone number because she now needs the fortune teller's tracking abilities to locate Ruri and Rin.
• In Big Human on Campus, very few people have the ability to form a plan beyond 'Find target. Beat target up. ???. Goals achieved.'. And the one plan that could actually be considered a plan in the first place, Oyakata and Ruby's Garigari and Hanabake army, has this in two ways:
  • First, the Hanabake and Garigari plants they use as soldiers are terrible for the environment- they're invasive species and the Hanabake explicitly need immense amounts of nutrients drawn from the soil. For people whose stated intent is to get revenge on humans for despoiling the environment and turning Witch's Knoll into a garbage dump, they're doing a very good job of despoiling Witch's Knoll to the point where it could probably only be used for a garbage dump anyways themselves.
  • As pointed out by the Shadow Cat and later Tsukune, their plan relies on all their targets being civilians unable to defend themselves against Hanabake, and the Japanese Military (along with the rest of the world) just leaving an entire city to die to what's essentially a magical terrorist attack without attempting to stop it or taking revenge on the perpetrators.
• Boldores And Boomsticks: Faba sucessfully manages to erase the Aether Foundation's computer network and destroy it beyond recovery, but he didn't do anything about the offsite backups. Restoring the lost information becomes the work of a couple hours, and Team RWBY and their allies gain access to all his research into creating Ultra Wormholes.
• In Can I Keep Him?, Mirabel decides to capture the "monster" to prove its existence to her family, setting out food for it with plans of catching it with a crocheted net. Unfortunately, she didn't anticipate that it would be too big for her net to slow it down, nor did it occur to her that being a normal ten-year old girl with the strength of one would be insufficient when hunting a large beast.
• Nick Fury in A Child Avenged wanted to get Harry Potter to join the Avengers Initiative. When Harry refused, Fury decided to kidnap his foster son in an attempt to get Harry to come to them long enough to convince him to join. Instead Harry goes full Papa Wolf and warns Fury that if he does that again, Harry will make him watch as he kills every agent in SHIELD.
• In Child of the Storm, this is a running problem with Harry, especially since it's usually combined with a habit of not informing people about what he's up to. His strategy for the first book, and the first part of the sequel, is to charge into trouble to help whoever needs helping, then Indy Ploy his way out. His raw power, knack for the Indy Ploy, and increasingly, Xanatos Speed Chess, as well as a number of significantly powerful allies, usually get him out of trouble. Then, during the Forever Red arc, it backfires spectacularly, leading to a brutal Trauma Conga Line. Afterwards, while he's still prone to charging in, thanks to being Taught by Experience and Bucky's patient mentoring, he'll stop for long enough to get relevant information, equipment, back-up, and a half-decent plan.
• A Clash Of Neets: Aqua's failure to think ahead is what led to the creation of the Kinslayer: Aqua reincarnated Arthas Menethil to be her newest hero, and give him a second chance to be everything she believes he would've become on Azeroth if he'd never fallen. It was a legitimately compassionate and well-intentioned decision, but she never stopped to consider that he would choose, even with the opportunity to a hero and a good king, to embrace evil all over again, and become the Lich King reborn.
• Invoked in the Doctor Who/Smallville crossover The Clinton Street Car Crash; when the Doctor realises that the 'Jor-El' AI in the Fortress of Solitude is actually General Zod trying to stop Clark becoming Superman, the Doctor explicitly asks Zod why a supposed tactical genius made his base of operations an ice fortress when his enemy is capable of shooting fire from his eyes, distracting Zod while Clark destroys the Fortress.
• Code Geass: Paladins of Voltron: While Charles' plan to deal with Zero is rather sound, he never considers that Lelouch might've changed enough during his journey to cause the plan to lose its effectiveness.
• In The Confectionary Chronicles, this arguably applies to Hermione, as her desire for justice has on a couple of occasions had potentially wider implications than just helping someone; saving the dragons from Gringotts compromised the wizarding world’s faith in the goblins as bankers and almost triggered a new war, as an example.
• Contact at Kobol:
  • As relations between the Tau’ri and the Colonies begins to break down, group of Colonials attempt to kill the wolves the Tau’ri brought to the Colonies to represent Earth’s animal, but they underestimated the danger the wolves could pose and seven men are killed in the process of killing three wolves.
  • May arguably apply to the likes of Admiral Cain or the Spiros family, as they provoked a war with another culture they knew little about without considering the risk if that culture was significantly more advanced than they were.
• The dark never consumes all, for the light remains within its core:
  • The miraculous heroes merely just charged into battle (which shocks Marinette, as she didn’t recall handing out miraculous to her classmates yet), without even noting who happens to be their adversary. Worse still, they’re the primary (and personal) targets because they hold the Tibetan miraculous, subjecting them to a one-sided battle.
  • Anything Alya says tends to be this, especially at the start when she badmouthed Garmadon despite having been beaten by him earlier. To her defense, she didn’t expect him to be personally at school for his son.
  • When Chat Noir and Carapace attacked Charron whilst she had her powers activated, and even when she and ladybug teamed up, they’d didn’t think about the consequences, such as gravity suddenly returning to normal.
  • Surprisingly for once, Lloyd was hit by this when he was attempting to ambush a surprise dance orchestrated by the Akuma class. In his defense, most school dances are held in schools.
• Dead or Alive 4: The Devil Factor: Helena's endgame after taking down the corrupt members of DOATEC is to step down as President and then have her half-sister Kokoro inherit the company, believing such a sweet and all-loving girl will be able to make the company honest again. When Dante learns about this, he is annoyed and points out the flaws in this plan. As a sheltered and naive teenage girl, Kokoro has no business training or experience, and likely wouldn't be interested in running a company anyway.
• A DIC-less SI:
  • Nabiki Tendo tries to take a magical empathy granting ring from Kasumi, all while claiming she's just trying to protect her family, while the latter is wearing said ring. Kasumi lampshades that she can tell that Nabiki doesn't believe a word of what she's saying and just wants the ring.
  • Earlier Ami mentioned that John had something of Haruka's from Crystal Tokyo in his apartment. In the middle of Makoto advising scouting out the situation so they know what's going on, Rei calls Haruka about it and (accidentally) advises/causes the older woman to break into his apartment and steal the magical artifact: his toaster. Makoto immediately lampshades that Rei just caused things to escalate into a major disaster.
• A Divine (Romantic) Comedy:
  • As his fellow Sins point out, Mammon placing a bounty for Lucifer's location was a poorly thought out solution to their leader's disappearance, this being the big clincher that led to Lucifer's disappearance (and suddenly renewed love-life) going public in Hell.
  • Charlie has Dazzle spy on her father's date with Camila... forgetting that he doesn't understand language, so his "notes" consist mainly of the word "Baa" over and over, with a few doodles of his new rival Stringbean and what appears to be Camila and Lucifer thrown in.
  • Even after seeing a taste of what Lucifer can do, Jacob still tries to attack him and Camila, in a public cafe, with just a crucifix and a knife. He also forgets that Blitz, who is a demonic assassin, is also there with his daughter, said daughter pinning him with ease.
• Doorway To Inkwell Isles: The Devil runs into this when, in another one of his schemes to convince Isabela to marry him, he tries the same trick he tried on Mugman and tells her that more time has passed in the Encanto than in Inkwell Isles and her family is dead. When she declares she doesn't buy it by pointing out that she knows for a fact that time passes the same in both worlds, the Devil internally questions why he used a trick that failed on a child, meaning there was pretty much zero chance a young adult was buying it.
• The Dragon and the Bow:
  • When Merida is trying to kill Hiccup to get out of her Arranged Marriage, Hiccup is able to defuse the situation by asking And Then What?, prompting her to realize that, even if she succeeded, she'd still be stuck on an island full of pissed off Vikings who'd most likely kill her and her family in retaliation, thus sparking another Viking-Highlander war.
  • During dragon training against the Hideous Zippleback, the students quickly realize that, even though they've doused the sparking head and taken fire breath out of the equation, they've still got to deal with something that's several times their size, has razor-sharp teeth, poisonous saliva, and is pissed.
• The Dragon and the Butterfly: When the Vikings set out to find Hiccup (Stoick and Gobber to bring him home, Astrid and Fishlegs to get him to save Berk, Snotlout and the twins for their own reasons), it never occurs to them that years of abuse from the entire community would likely prevent him from wanting to go with them. Astrid's plan of threatening him until he agrees is also this trope (as Fishlegs tells her why that won't work).
• Played for Drama in Dragon Knight when Xander is promised that once he brings peace to the land, he'll be returned home to Sunnydale. Xander always assumed he'd have to visit the dragon who brought him there to return but instead he's instantly transported back when his quest is complete, leaving behind his wife and son.
  • A Played for Laughs example occurs later when Buffy takes Alexander's wife Audrey aside to explain tampons to her, claiming that there's "things about this time and place he can't explain to her". Alexander irritably remarks that he's a married man with a son, not some blushing teenager too embarrassed to discuss periods; he knows how his wife handles them in the past and how they're handled in the future.
  • Audrey of all people is the one to explain to Willow why her surprise birthday party plan for Buffy was a horrible idea. While barely knowing Buffy personally, Audrey knows she's a warrior like her own husband (Ale)Xander, and notes that leading him to a darkened room and having a bunch of people jump out and yell after warning him of a demon attack would end in the surpriser's very quick demise.
• In Elements Of Justice: A Hollow Diamond, Diamond Tiara never thought of the consequences of her Blackmail attempt. She destroyed the lives of many ponies for one roll of sparkly fabric by stealing Scootaloo's scooter in exchange for it. Her father tells her that they're loaded, so they could just buy some of the fabric off of them. But now she ruined her family's reputation due to many factors. One of the Cutie Mark Crusaders is Apple Bloom, and Diamond's wealth comes from their production of Zap Apple Jam; should Sweet Apple Acres refuse to do business with them, they're toast. Then there's the fact that Scootaloo's parents, who made the scooter, would spread word about how Diamond Tiara stole something precious from their daughter. And there's the fact that her plan hinged on them meeting at Everfree Forest at night.
• In Ere we go, Pluz Ultra!, All-Might and Inko prevent Izuku from bringing any lethal firearms to the U.A. entrance exam even though the exam is fighting robots (something All-Might knew but Inko didn't). As a result, none of Izuku's weapons are remotely effective and he's forced to improvise.
• Equestria Girls: A Fairly Odd Friendship: The Rainbooms, while they were aware how unhappy Timmy would be at them spying on him, never imagined how he'd feel about them only (at first) acting nice to him over him possessing magic. Twilight admits that she is so used to be seen as an infallible authority, and so used to coming out on top in Equestria, she never imagined someone like Timmy wouldn't just accept her actions.
• In Frozen Turtles, Anna, in particular, falls victim to this on a fairly regular basis, ranging from grabbing a sword when confronted by Rahzar without taking into account that she doesn’t know how to use it to trying to aid in the plan to rescue Elsa only to be captured by Shredder and nearly used as a hostage.
• Andrew realizes he forgot a few steps in his plan to expose Xander as Ranma Saotome in Halloween and a Half by dousing him with cold water after a very angry (and very female) Xander demands to know what the hell he's doing.
• Guardians, Wizards, and Kung-Fu Fighters: In Nerissa's Start of Darkness chapter, she kills all the Great Barons of Creznac in order to end that world's Forever War. But as the Council spell out to her, that conflict has become so integral to Creznac's cultural mindset that they're not going to stop fighting just because of a change of leadership.
• Urd attacking Ranma Saotome for being rude in Hell Is a Martial Artist is shown to be a colossal mistake on her part. Not only is attacking a mortal (with deadly force no less) for any reason but self-defense a very serious crime in Heaven, but interfering with a mortal for reasons other than wish-granting means said mortal is now fair game for both sides. And unfortunately for Urd, Hild is rather interested in the young martial artist.
• In the The Rising of the Shield Hero/Saint Seiya crossover The Hero Melromarc Needs and Deserves, king Aultclay and Myne try their canon plan to disgrace the Shield Hero in spite of Deathmask having already spent his first day in Melromarc single-handedly wiping out four bandit gangs. Deathmask quickly twists the situation to his advantage, and the only thing keeping him from shaming Aultclay into effectively handing him control of the kingdom is that, upon realizing they were accusing him to having raped Myne, he feels so insulted he forgets in anger and leaves after beating the crap out of her.
  • Goes even worse in the series of omake showing how it would have gone with the other Gold Saints-and with Shaka they mistake him for a woman and accuse him of trying to sell Myne as a sex slave out of envy at her beauty. The accusation loses any credibility when Shaka simply drops his pants-before teleporting Malty to some hell and turning Aultclay in a vegetable.
• In Hero System when Xander, Willow, and Jesse hop into the Harry Potter universe, Willow chooses a higher difficulty to earn them more points and so she can play as Tonks while still being in the same year as Xander and Jesse. Unfortunately, Jesse is playing Harry Potter and the higher difficulty made his life even worse than canon, to her immense regret.
• Palpatine, in an attempt to learn more of Ranma's secrets in A Horse for the Force subtly convinces some of Padme's handmaidens to watch Ranma spar with Obi-wan and Kit Fisto and record it. Unfortunately, he didn't consider that healthy young women like them would be more interested in filming the sweaty muscular men's physiques than recording the actual spar.
• Some dissidents in How To Train Your Overlord decide to kidnap and "disappear" Hiccup, then turn his Battle Harem into sex slaves. Unfortunately for them, they stuff him in a sack and drag him along the ground in the soft mud after several days of rain. As a result, there's a clear trench leading right to them that said Battle Harem follows.
• In The Infinite Loops Twilight Sparkle invokes this when she's as an alien on earth in an X-Com Loop and wants to disarm the public with adorableness. "So in the words of friendly aliens from your fictional works live long and..." looks at her raised hoof, "Huh? Didn't think this one through."
• Infinity Train: Blossoming Trail:
  • Chloe gives in to her classmates' pressure to battle Ash in hopes that doing so will get them to shut up and stop bothering her so much about Pokémon. She quickly comes to regret this as it becomes clear that everyone is latching onto her fight as a sign that she's finally starting to care about Pokémon, with Goh and her father suddenly paying significantly more attention to her - or rather, to her fight. Making matters worse is that Goh recorded the match on his cell, and she realizes that chances are high that he'll show it to everyone at school... opening her up to even more teasing given how badly she lost.
  • When Parker goes to Chloe's classmates asking for help putting together a tribute to his sister, they decide to twist the knife by bragging about how much they bullied her. None of them thought about what might happen if word of their cruelty got out; they only realize how much they screwed up when they learn that Parker, Trip and Ash just turned their bragging into an Engineered Public Confession. Not only do the trio now have evidence of how they treated Chloe, so do several other students who recorded their bragging and posted it online, effectively destroying all their reputations. Not only do they get expelled, their parents are furious at how their thoughtlessness has ruined their futures — the chances of finding any school willing to enroll students who openly boasted about driving a classmate away are incredibly low.
• In Season 1 of the J-WITCH Series, Valmont attempts to coerce the heroes to work for him by using the photos he has taken of the Guardians. Yan Lin singlehandedly scares him to hand over the photos and flee by pointing out what's wrong with his tactic.
  Yan Lin: Let me see if I understand you correctly, Mr. Valmont. You believe these five girls; these five, teenage, rebellious, and headstrong girls possess powerful magical abilities, the likes of which can defeat even of the most vile of monsters, who are currently being trained by men that you know have defeated demons with nothing more than simple spells and their bare hands... and your response is to blackmail these people? (Valmont nervously realizes that the heroes are ready to attack him as Yan Lin smiles) Good luck with that.
• In The Last Connor, after Newt learns that someone is trying to kill her, she runs away from school and her grandparents to the nearest mall, only realizing after arriving that she doesn’t have money or food.
• Several in Manehattan's Lone Guardian:
  • Gray at one point becomes so overwhelmingly angry at Leviathan for taking her children out of her sight without permission that she rips apart the Pyre of Fears' stairwell. This comes back to bite her when the building's owner returns home later, learns what happened, and forces her to work there until all of the damages are paid for.
  • In the same incident, Leviathan is no less guilty. She leaves a note for Gray saying what she was doing, but doesn't think to ask her directly if she could take the pegasus's children with her. The overprotective Gray's willingness to get in her face over the foals' safety leads the Reploid to dwell on her mistakes until Drama comes home and snaps her out of it.
• In an omake for Metagaming?, Harry and Luna take their companions to The Matrix for fun and to show them a world that operates on similar rules as the Emerald Dream. It's only when the Matrix is literally burning that it occurs to Harry that going into what is functionally a giant technological slave pen when his divine portfolio revolved around liberation might have been a bad idea.
• Two examples in Mortal Kombat vs Marvel Universe in regards to The Exiled Kombatants:
  • When Norman Osborn kidnaps Cassie and Ravenna Cage as payback for the brutal beatdown he suffered at their parents' hands, he expects Johnny to surrender Cage Incorporated to him in exchange for their safety. Neither he nor H.A.M.M.E.R. realize that the Cage sisters were powerful telepaths until they start to butcher the gang of villains, including Madame Masque and the Purple Man.
  • When Raiden orders Kano to silence Vera Briggs (Jax's wife and Jacqui's mother), Kano and his son torture and rape her just for kicks. Once Sonya and Cassie find out what they had done, mother and daughter proceed to kill father and son.
  • When Raiden orders Shang Tsung and Kano to kill his former champions and to bring Cassie back, he didn't expect the former revenants and his former chosen warriors to join forces.
• In My Hero Academia: Unchained Predator, Wolfram doesn't tell the Steel Sabers about the Slayer on the basis that the man wouldn't show up to I-Island. It didn't occur to him to tell the Sabers to pick a fallback point outside of Musutafu, where the Slayer was last spotted. When the Sabers stumble onto the Slayer's hideout, it didn't take long for the Slayer to find out about the Sabers' crimes and atrocities, slaughter the tunnel group, and make his way to I-Island to show the Sabers the true meaning of fear.
  • Bakugou's attempts to fight the Slayer comes off as a mix of this and pride. Because Bakugou thinks he's the hotshot, he decides to take on the Slayer... despite the fact he bested All Might in combat, and with the exception of All Might-levels of strength, absolutely nothing worked to break, dent or even melt his armor. Bakugou gets predictably captured, and when Miruko tries to intervene, she gets captured as well. When he attempts to use his Quirk again, he doesn't notice that there's a leaking fuel tanker, and All Might and Miruko are screaming for him not to do it (as they will be fried as well). Had the Slayer not hurled all three of them away, Bakugou would've killed off the Number five Pro Hero of Japan and the Symbol of Peace to sate his ego.
• Characters who do this in The Night Unfurls would find themselves either with additional trouble, or severe punishment.
  • Vault invites Kyril to join him and the Black Dogs to create a Sex Empire. He assumes that the Hunter, a man, is eager for a life to "live as a king" by fulfilling his sexual desires. However, he fails to consider that the Hunter is not only celibate, but also against his actions because they are, well, bad. Vault's invitation only created his biggest threat to his conquest. The remastered version is even worse for Vault, as this misplay gets him killed.
  • Kyril's decision to leave his journal, an Artifact of Doom, inside his unlocked quarters, instead of the Dream where only he and his trusted companions can enter. He doesn't consider that someone would just waltz in and take a peek at the journal due to curiosity, which is exactly what Celestine and Olga do. Perhaps unsurprisingly, the two gain Insight, suffer breakdowns, and unwittingly know of a fragment of Kyril's memories in Yharnam, all of them are scenarios Kyril wants to avoid in the first place. He lampshades this one chapter later.
  • By the same token as the above example, Celestine and Olga as well, for falling for the Schmuck Bait. Never underestimate the urge to read someone's journal/diary.
  • Alicia's decision to surrender her entire fortress to the Black Dogs just to save a group of hostage nuns from being raped. Even if one considers that those nuns are her cousin Prim's friends, which may have contributed to this decision, it still doesn't change the fact that she blatantly sacrifices her advantage/high ground, allowing the Black Dogs an easy win with little effort. To make things worse, the nuns end up getting raped anyway since the Black Dogs have never spared women in their warpath for in-universe years. Both Alicia and Prim can do nothing but wait for Kyril and the others to bail them out, and Alicia is alienated by both said nuns and her own cousin for her idiotic cowardice.
  • Discussed and defied in Chapter 19 of the original. Lily is perturbed by Soren stealing a List of Names from a representative of the merchant's guild. While it is true that Soren has found useful intelligence, namely the transactions Sir John Mandeville made with some of his associates, he fails to consider that this action would risk causing unnecessary complications, including: alerting Mandeville, which would make him harder to catch; and forming a rift amongst The Alliance due to the potential scandal that involves Claudia's husband Klaus (because his name is found alongside the names of a list of traitors). In order to avoid said complications, the two decide to act subtly, communicate with their allies, and plan ahead.
• The Nighthawk Chronicles: Raven finally works up the courage to tell admitted demon-hunter Xander that she's half-demon, hoping their friendship will keep him from killing her on principle. Xander reminds her that they're all cartoon characters where he's from—he already knew she was Trigon's daughter.
• On the Run:
  • Clark adapts his car with a kryptonite booster for extra speed, but when he has to save his car from an explosion set off by Dom and Brian, he reflects that he should have used a less explosive fuel.
  • On the other hand, later on Clark is still able to threaten Tess when she’s wearing a blue kryptonite necklace (she didn't use green as she didn't want him writhing in pain as that would be too conspicuous), as even without his powers Clark is still bigger and stronger than Tess.
• Origin Story: After watching Alex Harris toss around The Avengers like they were dolls, several SHIELD agents try to dogpile her. It doesn't work out for them at all.
• Paradoxus: Altalune's plan to save her mother and Stella is, essentially, to sneak behind them, render them unconscious with copious amounts of chloroform, and keep them in the ship until past the day they were assassinated. If this was a normal Winx Club fanfic, it would have probably worked just fine, but she's forgetting three minuscule details. One, Bloom and Stella are more powerful than Altalune and company, so kidnapping them is not exactly a piece of cake. Two, there's nothing stopping Eudora and Diaspro to wait it out and kill them another day, while Altalune and company have a time-limited sojourn in the past. Three, even if the Winx are now unpaid, volunteer professors in Alfea, both Bloom and Stella are queens who have to administer their kingdoms. Therefore, Altalune and company are relying on sheer dumb luck to catch those two in Alfea and alone. Why Altalune? Why? Really, it's better if you let the planning part to your sister. Not even your mother was this bad. And you're surprised it failed?
• The Pirate's Soldier: Misao Kuramitsu loves his older sister Mihoshi a bit too much, so when his family announces she's going to get engaged to Heero Yuy (the recently discovered prince of Jurai), he decides to stop it at any cost, leading him to contact Kagato so he can take Heero away. He fails to take into account that Mihoshi may have not been forced into the engagement and would actually be willing to marry him, that Mihoshi would potentially get hurt trying to defend her fiancé (which happened when Nagi had to knock her out), or that their family would begin an investigation to find out who snitched on them and find out he was involved. The kicker of course comes when he tries to get help from Kagato, who points out that he should have foreseen the potential consequences of his actions and promptly leaves him to his fate as he already fulfilled his end of the bargain, and later, he gets interrogated by Mihoshi herself, who is very, very angry about what he did.
• Raise Yourselves Up (We're Done):
  • At the urging of Lila, Alya and most of her other students, Miss Bustier bans Marinette and Chloé from joining them on their annual class trip... without considering that Marinette is typically the one who handles organizing said trip and all the fundraisers, or that Chloé's father typically donates thirty percent of the money they need. Since neither is permitted to join them, they naturally decide they won't get involved with any of the arrangements this time.
  • Alya assumes that the annual class bake sale will perform just as well as always, before remembering too late that said bake sale was largely successful thanks to the Dupain-Cheng bakery donating plenty of free goodies. But since the class has been bullying their daughter, they have no interest in helping.
  • Making matters far worse for all involved is how Bustier doesn't bother helping Alya or the others at all. Not only are they left to figure out their fundraising efforts without any guidance from their teacher, Bustier neglects to make any of the necessary arrangements: she doesn't get permission from the school board, doesn't research or make any arrangements, does absolutely nothing whatsoever. This ultimately bars them from being able to leave Paris at all, since she Never Filled Out Official Paperwork or got their passports ready.
  • Since nobody in the class researched how much their plans would cost, Marinette and Chloé eventually have to break the news to them that no, $5,829 is not nearly enough for thirteen kids plus their chaperones to spend a full week in New York.
• In The Secret Keeper sequel The Wisdom Seeker, the Cullens, particularly Bella, accuse Romilda Vane of this when she used a love potion on Edward, pointing out that Edward isn't a cuddly golden-eyed teddy bear but a vampire who could have easily killed Romilda if they went too far and would have caused her great pain when he tried to turn her.
• In Sekirei? Is that some new species of little sister?, a random Muggle kicks the back of Naruto's seat and tells him and Xanna to shut up. Even if the two weren't gods, both are over six and a half feet tall, have claws and fangs, and Naruto's built like a damn bear. Said muggle realizes his mistake the moment they stand up and tower over him.
• In Ship of the Line: Humanities Loss, Xander has a bad habit of acting on ideas the moment he gets them. The worst is immediately transporting three detected aliens to the ship without consulting with anyone. As a result, Stargate Command is alerted to a new alien faction when Teal'c is teleported out of the base.
• Star Wars vs Warhammer 40K: After the Imperium of Man intervenes in the Clone Wars and conquers the Axum system, which is located only a few star systems away from Coruscant itself, Admiral Tarkin fears that the Imperium is going to attack the Republic's capital next and advises Chancellor Palpatine to recall the entire Republic Navy back to defend Coruscant. Palpatine not only follows his suggestion but takes it one step further, recalling the entire Republic military and Jedi Order back from their campaigns in the Outer Rim Sieges. Both Palpatine and Tarkin seem to have overlooked the fact that this leaves every other Republic world undefended and vulnerable to Separatist attack. Sure enough, General Grievous immediately claims victory over the Outer Rim Sieges and launches a full-scale invasion into Republic space while facing little-to-no opposition. This move also costs Palpatine a lot of support in the Galactic Senate as many senators are understandably furious that their worlds were abandoned just to shore up Coruscant's own defenses.
• The Marvel Cinematic Universe/Harry Potter fic Strange Potter features a historical example of this when Doctor Strange points out that if horcruxes truly granted immortality there should be ancient Egyptian wizards walking around thanks to their horcruxes. In reality, the horcrux only grants a temporary immortality, as the soul fragments will eventually consume the host object.
• Take the Pain Away (Amphibia & The Owl House): Lilith runs into this when rescuing Marcy Wu from Belos' castle. The rescue itself is a success, but Lilith realizes after escaping the castle that she didn't give any thought in advance to where she'd take Marcy after betraying the Emperor's Coven, leaving her with nowhere to go except to Eda.
• In the Told That Devil to Take You Back series, this is basically Amara’s justification for bringing Samuel Campbell back to life, as she was only thinking in terms of bringing the Winchesters’ family back together and didn’t ask Chuck for details of what the brothers’ relationship with Samuel was actually like.
• In the Supernatural/NCIS fic When Worlds Collide, at one point Pedro Hernandez- the drug dealer who killed Gibbs’ family and has now become a demon- tries to kill Dean by possessing a marine, but fails to take into account that just having control of the marine’s body doesn’t make up for the fact that Hernandez was a fat, lazy slob in life and still has no idea how to actually fight.

Ah My Goddess

Ah! My Goddess

• The Vain Rose's Garden:
  • Urd puts on a strip show for some of Keiichi's friends but keeps her crotch covered with a pasty that she used some stuff she found to keep on. She later learns she used super glue.
  • In a later chapter, a demon tries to cause a scandal by sending Tyr pictures of his wife Ansuz kissing another man. Not only was Tyr fully aware of it (the two have an open relationship), but he and Ansuz sit down and discuss their recent relationship problems.
  • During a game of strip volleyball, Ansuz takes off her top at one point. When the crowd falls silent, she asks what the problem is and one of the spectators is foolish enough to declare it's not very exciting since she's nowhere near as busty as the other players. She throws the volleyball into his groin as payback.

Animorphs

Animorphs

• In Animorphs Redux, this potentially applies to David, as he morphs into a Chee to escape the attacks of the monstrous Veleek, but didn’t take into account that the Chee’s pacifist programming would prevent him either hurting anyone in this body or allow him to morph out of it. In David's defence, he may not have actually known about this particular issue when he chose such a form.

Arrowverse

Arrowverse

• In Baby, Won’t You Please Come Home, this basically accounts for how Laurel ended up staying with her mother when she left Starling City, as she ran through her savings and didn't have the means to get any more money to pay for alternative accommodation.
• Blackbird:
  • Dinah's decision, which Oliver lampshades. In her desperation to save Sara, she made the rash choice to trade Laurel, knowing she would lose one daughter in exchange for the other. She failed to account for how Sara herself would feel about the trade; once she finally got out of shock, Sara crossed the Despair Event Horizon all over again and has been a shadow of herself ever since. Essentially, in trying to save one daughter, she destroyed both of them.
  • Laurel notes that Oliver didn't really think through the unintended consequences of the method he used to free her from the League, though to his credit that was partly because it was the only option offered that would allow them both to leave alive.
• The Cutting Edge:
  • Laurel (active as Black Canary) tries to deal with the Royal Flush Gang by convincing them to make a legal appeal to the Queens to get suitable financial compensation. Laurel's actions were basically well-intentioned, but the case becomes increasingly complicated due to the potential legal precedent it would set for others dismissed in similar circumstances, culminating in Thea trying to talk with the Restons to get them to settle out of court and Kyle Reston taking her hostage as he interprets Thea's actions as an outright bribe.
  • Felicity is forced to commit corporate espionage for Ted Daniels under the threat of her life. Rather than doing the sensible thing and reporting it to the authorities and her superiors, she instead tries to frame Naomi for her actions in order to completely absolve herself of any wrongdoing. As pointed out by Walter, if she had just come forward from the start, he would have never fired her for the espionage since she was clearly under duress. Her actions against Naomi, however, are inexcusable, purely self-serving, and more than warrants termination.
  • Quentin feels that this applies to him when he rejects Black Canary's attempt to reach out to him about an upcoming potential mob war, as he reflects that he could have pretended to be willing to become her police contact to eventually lure her into a trap.
• In Lantern's Day, In Canary's Night: Oliver and Felicity both come to realize they didn't seriously think through their decision to start a relationship with each other at all. On top of barely knowing anything about each other despite working on a team together for almost three years and having very little in common, neither of them seriously addressed the issue of whether or not Oliver was really over Laurel. As it turns out, he wasn't and part of the reason why he even dated Felicity is because he thought he ruined his chances with Laurel. Once that becomes clear, Felicity admits she should've never dated him in the first place, and Oliver can only agree.
  "She'd thought she'd been happy with Oliver, but that had all been built on lies and a fool's hope that a man who'd carried a single woman's picture in his pocket to keep him going through five years of torture would simply just get over her and be able to move on with someone else no problem."
• Never Be Silent: Thea is forced to acknowledge that Team Arrow didn't seriously think through all the details of Oliver's decision to run for mayor after a comment from Alex points out that, had Oliver been elected, he would've likely had to grant a tax break to Palmer Tech in exchange for Felicity's campaign contributions. The fact that she can't even remember whether the funds came from Palmer Tech or Felicity's own personal account only serves as a further indictment against them.
• Rash Actions: Out of spite, Diggle tells Laurel that Oliver is the Hood. On his way home, he realizes the potential consequences: if Laurel goes to the police, Oliver will be arrested, he and Felicity will arrested as co-conspirators, no one will be around to stop the Undertaking, and his family (Carly and AJ) could face repercussions as well. By the time he gets home, he's openly panicking.
• Vigilantes' Dawn: Laurel's Faking the Dead ruse after reuniting with Oliver in Russia was an impromptu decision that she admits she didn't put a lot of forethought in. While the act in itself was successful in fooling the League of Assassins, Laurel had no real plans to deal with them when the ruse was inevitably blown to hell with her and Oliver's return to Starling City. Instead, she just hoped her very public return would be enough to ward them off of killing her, for fear that it would compromise their anonymity. It fails. It was only thanks to Nyssa's fondness of her and fortunate timing that Laurel was able to find an alternative.
• What It Takes:
  • Quentin outs Laurel's identity as the Black Canary to the entire city, and asks them to report any sightings of her to the police. As Diggle points out, every criminal in the city will be out for revenge and will kill her on sight (although on the flip side, most of the common people she protects aren't that inclined to turn her in under these circumstances).
  • Malcolm accuses Thea of this when she uses the Lazarus Pit to bring Sara back to life and only learns about how Sara will want to kill her given the circumstances of her death after the feral Sara has started trying to attack her.
  • As a wanted criminal, Laurel has to constantly keep her guard up, and is afraid of her base being compromised. So, when Barry drops by unannounced (by phasing through the wall no less), she nearly cracks his head with her staff.
• Wrong Road to the Right Place:
  • When Laurel learns of Oliver's plan to find the Count by posing as a buyer, she asks what his plan is if the Count cuts a deal and gives up his buyers. Oliver is visibly stumped by the question, and Diggle (who would have been an accessory) even gives Oliver a questioning look.
  • When Laurel has grabbed the Dodger in a hold and threatens to take him out into the main exhibition, the Dodger starts to threaten her with the bomb collar he just placed on her before Laurel points out that he can’t use the bomb now without blowing himself up as well.
  • Learning that Tommy bribed the building inspector to not look in Verdant's basement (Oliver's lair), Laurel Face Palms as now she has to deal with that too to prevent her father from searching it.

Amphibia

Amphibia

• Trade Us for the World:
  • Played for Drama with Anne; while her plan to escape Toad Tower succeeds, she finds herself slogging through the swamp afterwards, with nothing on hand to help her treat her injuries.
  • Similarly played for drama in "Chicken Game", when Marcy decides to unleash a Chicka-lisk, hoping that some Engineered Heroics will help the rest of Wartwood accept her. They're caught completely off-guard when their involvement is exposed.

Batman

Batman

• This is practically Bookworm's trademark in A Better Class of Criminal. The more he uses magic, the more unstable he becomes. But he keeps solving all his problems with magic, and using magic to solve the problems created that way.
• Bruce Wayne's plan to introduce himself to Barry Allen doesn't go well in Total Stranger in the Dark when Barry responds to the stranger who's broken into his home by calling the cops then using his Super-Speed to knock Bruce out and tie him up.
• The Viking AU Tribute has Tim Drake dressing as a girl and offering himself to the raiders about to assault his impoverished homeland, reasoning that a highborn daughter is enough of a tribute to content them. The barbarian leader is so pleased by the "lady" he decides to marry "her" to his second son. Cue Tim freaking out because there's a couple of things the groom is bound to notice on the wedding night... Fortunately, the bridegroom is actually his long-missing childhood friend and crush, rescued and adopted by the tribe.

Battlestar Galactica

Battlestar Galactica (2003)

• Did I Make the Most of Loving You?;
  • Roslin accuses Zarek of falling victim to this when he tries to stage a coup early in the fleet's journey after regaining his memories of the original history. As Roslin points out, in the original timeline he had years to try and win over the people when he tried to stage his own mutiny, and he still couldn’t get enough support for his attempted coup, so it should be obvious he's just going to fail if attempting such a plan now.
  • Roslin has the idea of issuing passes to other ships in the fleet for individuals in particularly high-stress jobs to give them a necessary change of scenery, reflecting that she only had that idea in the original timeline while she was in the medical bay getting treatment.

Bleach

Bleach

• Played for Laughs in A Different Path when Tier Harribel releases her Resurrecion so she can properly kiss Ichigo. Unfortunately for both of them, she forgets they're in an underground cave and her release summons a massive wave of water.
  • Earlier Ichigo tried to kiss Tier but forgot about her mask and promptly cut his lip on its teeth.

Bolt

Bolt

• The Bolt Chronicles: In "The Service Dog," a few peoples' judgement proves faulty regarding the charitable program offered by the Thurber Institute, one where sighted volunteers experience what it's like to be blind during the course of the day. This includes Ulgine Barrows, who established the dubious program despite opposition from her supervisors and Penny, who ignores her mom's concerns and decides to participate — and finds herself woefully unprepared for its challenges. When things don't go well for Penny and Bolt, the program is shelved immediately afterwards.

Bones

Bones

• In Iridescent, set in the sixth season, Booth's then-girlfriend Hannah Burley decides to try and do something nice for Booth by tracking down his father, only learning after the fact that the man was an abusive parent who Booth chose not to look for. When Booth points out that he has the connections and experience to have found his father himself if he wanted to, Hannah justifies her mistake as she assumed it was some 'macho' situation where neither Booth or his father wanted to admit they were in the wrong by looking for the other first.

Buffy the Vampire Slayer

Buffy the Vampire Slayer

• Bring Me to Life: In chapter 12, when confronted by Cage and his vampire pack, Dawn claims to be Buffy herself, hoping that Buffy's reputation as the Slayer will be enough to scare them off. While many members of Cage's pack are understandably freaked out, Cage himself decides to try and kill "Buffy" for the Villain Cred, something Dawn failed to consider would happen.
• "Osiris Makes a Counteroffer" reveals that Spike was basically acting as though he was unaware of the plan to resurrect Buffy over the preceding summer with the goal of endearing himself to her after she came back to life by arguing that he wasn't part of the plan. Unfortunately for Spike, the Buffy that is brought back to life is the Buffy from the alternate reality depicted in "The Wish", who swiftly stakes Spike as she has no reason to see him as anything more than a creepy vampire.
• In Xendra, Willow works out that the Watcher's Council is under a magical contract and loudly announces said fact to members of the Council, breaking the contract. Afterward, she admits to knowing that magical contracts have penalty clauses, but never once considers what they might be. If not for Willow being considered a third party, those clauses would have wiped out all descendants of the Watcher's Council who initially agreed to the contract over a thousand years prior which, as Quentin Travers furiously explains, would have resulted in the deaths of roughly half of Europe and North America along with wiping out the Slayer line permanently.
  • Willow's biggest problem can be summed up as being "too clever" as she comes up with an idea and immediately implements it without considering it or telling anyone first, such as replacing several items on a magical ebay with items that explode upon opening. While the items she replaces are only useful in seriously dark magic, Giles and Xander point out that the ones ordering them could very well have innocent victims/sacrifices nearby when they open the containers. That Willow frequently resorts to magic right away also causes problems, such as cratering Xander's yard when Buffy's magic hammer took offense to her trying to lift it with magic.
  • Buffy continuously forgets that her magic troll hammer is only light for her and weighs several hundred pounds for anyone/anything else (Xander's van can barely haul it). She does several thousand dollars worth of damage to Xander's deck when she places her hammer on his picnic table, causing said hammer to smash the table and the deck underneath.

Camp Half Blood Series

The Camp Half-Blood Series

• In they'll name a city after us while Apollo had the good sense to wait until the Either/Or Prophecy was over to kidnap Percy Jackson out of obsessive love, he definitely did not think it through. For one, Percy's father Poseidon, a god older and stronger than Apollo is utterly pissed off and desperate to find his child. Poseidon's sister Demeter has openly started to support her brother since the situation really pushes her Trauma Button in regards to her own child. That makes it two old and powerful gods opposed to Apollo once he is discovered.
  • Aphrodite, being a Love Goddess knows right away that it was him. Aphrodite also is not the only love god around. Her son Eros actually specializes in romantic love and Love Hurts and he is an old and bitter enemy of Apollo.
  • Apollo's father Zeus, the Top God will never approve since he hates Percy.

Codename: Kids Next Door

Codename: Kids Next Door

• Boxed In has the Steve suffering from this twice.
  • The first moment comes from the fic's backstory, where it's revealed that, although the treaty with the Kids Next Door was a trap, he failed to consider the idea that some of the Teens might have actually wanted peace with the Kids Next Door. Due to this, his popularity plummets and there is open talk of overthrowing him as leader.
  • The second comes when it's revealed that the explosions that caused Numbuh 5 and Cree to be trapped in the crate were set off by him...only he didn't actually tell Cree he was planning to do this. Cree, who had taken the time locked with her sister to think things over, decides enough is enough and usurps him right then and there.
• The Candygirl: Chapter 4, which follows the aftermath of Operation E.N.D., mentions that Chad's plan to become a Fake Defector for the Kids Next Door was to get caught altering the records of various KND operatives invited to his 13th birthday party, then from there stage throwing the Moonbase to the sun, which would fail and keep the Teen Ninjas from trying the same while also impressing them enough so he'll be recruited and spy on them. He didn't account for the fact that Numbuh 86 is extremely overeager to decommission anyone on the list without checking the facts, and the plan only didn't backfire horribly because Numbuh One was able to avoid getting caught. He also realizes too late that everyone invited included Numbuh 5, meaning he'll have to deal with a very pissed off Cree for allowing her little sister to get decommissioned. End result? An hour long beatdown from Cree.

The DCU

The DCU

• The League of Shadows in Legal Crimes try to kidnap the Self-Insert character because he knows the formula Flash used to gain Super-Speed. After being detained, the SI points out that they've glued him to his cement floor and brought neither heavy machinery nor solvent so he won't be going anywhere for a while and they made a very loud break-in so the heroes who were monitoring him already know they're there.

Danny Phantom

Danny Phantom

• Facing the Future Series:
  • Even Vlad admits that his first attempts to regain his glory looked better on paper and were rather ham fisted when he didn't take into account the Curb Stomp Battles he endured.
  • Desiree’s plan to kidnap Danny in "Strength in Numbers", as lampshaded a few times. Not only did her spell require him to start eating, not taking into account his depression due to Sam being away (though Tucker managed to get him to eat, putting the plan back on track), she never considered what she’d DO with him when she captured him.
  • In "Bad Breakup", Danny and Sam faked a breakup in order to get Danny's enemies to back off on their attempts to separate them. Unfortunately, Danny and Sam soon realized it wasn't such a hot idea for several factors. First, the ghosts constantly scrutinized them to see if they weren't faking, thus forcing them to put on the act for quite a while and having to remain apart. They then realized they never came up with a way out of the plan afterwards. And finally, they didn't consider how their friends, who weren't aware of the plan, would react to believing Danny's enemies broke them up, as seen when Tucker, Valerie, and Danielle go on a Roaring Rampage of Revenge in the Ghost Zone.
  • In "What She Wants", Danny accuses Sydney of this with regards to his plan to have Desiree use her powers to make the A-listers fall in love with various nerds for Valentine's Day. As Danny points out, he never considered the heartache said nerds might feel the following day when the spell wears off.
  • In "Overheated", Townsend wanted to bulldoze Amity Park Salvage as payback for the now deceased owner refusing to sell out to him, causing a real estate project of his to fall through, using Burner's presence as an excuse. But he was so eager to get payback that he neglected to check and see if the man had any living relatives, which bites him in the butt when his granddaughter shows up, as he had left it to her in his will, making Townsend guilty of trespassing and destruction of private property.

Death Note

Death Note

• All You Need Is Love: L's plan to expose Light as Kira hinges on Light trying to kill him—but Light doesn't need to kill L. All he has to do is kill Watari and L's system collapses.
• Invoked Trope in Death Note: The Abridged Series (kpts4tv):
  Light: Wow, a book that drives people crazy when they touch it! (touches the notebook) Death Note? What. Is this like an advanced calculus notebook or something? I'm so gonna walk around and touch everyone with this and drive 'em...oh, right. I didn't think this one through.

Disgaea

Disgaea

• Wolf in the Streets, Sardine in the Sheets: After everyone makes taiyaki together, Valvatorez piles the results up to take a picture of their handiwork. Unfortunately, this makes it difficult to tell most of the pastries apart; the only ones that look different enough to be identifiable are the ones where the dough was dyed by what was mixed into it. Kurtis notes that at the very least, they should have been divided into 'sweet' and 'savory' piles in order to avoid extreme flavor whiplash.

Dragon Ball

Dragon Ball

• Dragon Ball Abridged:
  • Gohan suddenly realized mid sentence that his decision to challenge Recoome to a fight after Recoome had already wiped the floor with Vegeta, a much more powerful fighter, was a bad idea.
    Gohan: I'm not going to back down. I might be younger than you, smaller than you, weaker than you, and much less experienced, but I learned more about peach farming than yo—I think this was a horrible decision.
    Recoome: Recoome agrees.
  • In Dead Zone Abridged, Garlic Jr's plan was to have his minions kill Kami to avenge his father... then use the Dragon Balls to become immortal, despite Kami's life force being what keeps the Balls working. After Kami points this out, Garlic is honestly surprised and is glad his minions are "so incompetent".
  • Later on, after becoming immortal, he tries to kill everyone by summoning a portal to the Dead Zone...i.e. probably the only method that could also defeat an immortal like him. When the plot is revealed to be a movie pitched by Krillin, the latter admits he had "written [himself] into a corner with the whole immortality thing".
  • Piccolo dives in front of a blast to save Gohan only to realize too late he had plenty of time to simply push him aside and they'd both survive.
  • Garlic Jr. runs into this again in DBZ Kai Abridged Episode II.9 when he pops open the Dead Zone. He stops himself and realizes he's pulling the same stunt again and tries to close it again. Too bad Alucard shoots him in the head.
• In Hermit, the Z Warriors and remaining Namekians all gather at Guru's and suppress their power levels so Freeza and his men can't find them. Unfortunately, Bulma doesn't know how to suppress her power level. While she has a truly pathetic power level of one, she's also the only power level the Ginyu Force's scouters are picking up besides their own and Freeza's.

The Familiar of Zero

The Familiar of Zero

• When Saito suggests someone might be using "sleep potions" to continue poisoning Tabitha's mother in Soldier Of Zero, one of the servants angrily declares that she taste tests everything sent to her first and takes a swig of said potion. She has just enough time to state she probably didn't think that through before she passes out.

Fate Series

Fate Series

• In And Hell Followed With Them, Zouken attempts to exploit the idea that angels have no free will by summoning Azrael as his Servant Grand Rider. However, he's only able to summon him as a Pseudo-Servant, using Kotomine as his host. Somebody who has free will of their own and hates Zouken very much. Naturally, the summoning ritual succeeding really doesn't work out in Zouken's favor...
• Fate/Black Dawn: Shirou spent twenty years devising a ritual to go back in time and see Arturia again. When he got there, he realized he had no idea what to actually do, as Arturia was currently king, living as a man, married to a woman, who was having an affair with Arturia's best friend, and Camelot was destined to fall in a decade or two. He decides to go along with Morgan le Faye's plans, and that quickly derails what little forethought he had. Especially when he adopts Mordred, who is the daughter-homunculus that Morgan conceived from Arturia, without Arturia's knowledge, when Arturia was temporarily a man.
  Shirou: Wow, I took a lot longer to realize how complicated this all is than I should have.
• Fate/Harem Antics:
  • Because Irisviel wants Shirou to give her lots of grandkids, she messes with the Holy Grail War system from beyond the grave so that every Servant and Master (besides Shirou) is female so that they will all eventually join Shirou's harem. One of them is Hassan of Serenity, who is so poisonous that she kills her original summoner Zouken when he tries to slap her and then gets Ayako to be her new Master. Just as she is congratulating herself on her plan to get rid of Zouken and get Ayako involved, Kiritsugu points out that if Serenity is that poisonous, then Shirou would get killed if he tried to sleep with her. Irisviel quickly rectifies this by getting Caren to summon Shielder, who can make herself and her allies immune to poison. This then causes another problem because she had to mess with the summon limits to allow Shielder to be summoned and forgot to set them back. Ruler gets summoned because of the rule violation and people hear about the extra summon and decide to try their own summons. Irisviel has to frantically make sure all the new Servants and Masters are female.
  • Kiritsugu did not tell Shirou that he had a sister named Illya because he did not want to burden Shirou with more Survivor's Guilt (Kiritsugu had been separated from Illya and decided to raise Shirou). When they later meet, Illya gets homicidally angry that her brother did not know she existed and attacks. Kiritsugu admits he dropped the ball on that one.
• Nerve Damage: Waver Velvet travels with his Servants on a commercial airliner from England to Japan. However, he forgot that both of his Servants have No Indoor Voice and no sense of subtlety, so they have a very loud discussion about conquest that gets the passengers and crew very mad at them. Waver groans that he didn't think this through and he should have booked a private jet.

Final Fantasy VII

Final Fantasy VII

• In The Fifth Act Cloud tends to make hasty decisions without any good plans. He shows up on the Wutai Front but didn't bother to check if Sephiroth was even there, he tries to bribe terrorists but without an advocate he goes nowhere, he joins Shinra but has no plan to get at Hojo, etc etc.
  • Yuffie, who randomly wanders into dangerous situations and continuously insults and steals the materia of powerful Shinra SOLIDERS. It's a good thing everyone is so indulgent with her due to her youth.
• A Flower's Touch: Aerith is sent back in time to prevent the destruction of the Planet, has no real notion on how to do that. As a result, she begins winging it, taking actions that seem like a good idea at the time, but without fully considering all the ramifications.

Final Fantasy X

Final Fantasy X

• In Guardian, teenage Lulu manages to distract a fiend from Yuna by chunking her moogle doll at its head... whereupon it turns its attention to her. Thankfully, Kimahri shows up a couple of panels later.

Game of Thrones/A Song of Ice and Fire

Game of Thrones/A Song of Ice and Fire

• Chasing Dragons: Aside from all the other consequences that he couldn't have anticipated, Jaime's decision to abandon his inheritance in Westeros means that Myr has lost his potential as their greatest and most influential supporter in the Seven Kingdoms.
• In Of White Trees and Blue Roses, Rhaegar's abduction of Lyanna blew up spectacularly. Also, the Knight of the Laughing Tree participating in the Tourney of Harrenhal.
• Purple Days:
  • In one of his earlier Groundhog Day Loops, Joffrey kills Robb in Winterfell with a crossbow. He does it in an incredibly public place with no way out, so Jon stumbling in by accident is enough to ensure his demise.
  • The Stormlords in the Broken Knights loop declare for King Joffrey after Renly's death, seemingly hoping that he would forget that they killed two of his best friends only days prior.
• The Raven's Plan opens with the last survivors of Westeros making a desperate Last Stand against the Night King's forces, to buy time for Bran and Melisandre to enact a ritual to send Daenerys, Sansa, and Tyrion's minds back in time in order to try and avert the events that led to the wars which weakened Westeros just before the Second Long Night began. This ritual requires blood sacrifices, which are provided by Sansa, Tyrion and Daenerys, and works just fine. However, no one, not even the nigh-omniscient Bran, thought to take into account the 3000 men who'd be fighting and dying to make that stand in the same area; their spilled blood supercharges the ritual, causing a lot more people to remember than had been intended, throwing the plan Off the Rails.
• In Robb Returns, Illyrio Mopatis realizes too late that giving Viserys a false dragon egg may not have been the best idea.
• Down the Path of Good Intentions: Lyanna discovers the hard way that running away with Rhaegar (an already married man), breaking her betrothal, and throwing the kingdom into war has repercussions.
  • Her father Rickard and brother Brandon are dead and her remaining brothers, Ned and Benjen, have all but disowned her for dishonoring their family, getting Rickard and Brandon killed, causing a war and making House Stark the laughingstock of the Westerosi nobility. The Northern Houses refuse to politically support her because their sons died in the war she caused.
  • As a tomboyish Northern girl, she feels completely out of place in Rhaegar's castle located in southern Westeros, having no interest in sewing or other traditionally feminine pastimes. And even if she wanted to fit in with other women of the court, it doesn't matter, because...
  • ...every woman in Westeros despises her, from the highborn to the low. Peasant women see her as a vile seductress and homewrecker (especially since she ran away with Rhaegar while his wife Elia was recovering from giving birth to their second child), while her fellow noblewomen view her marriage to Rhaegar as setting a precedent that could let their husbands overturn their own marriages and give the inheritance rights of their trueborn children to their bastards.
  • Rhaegar reassures her that his first wife Elia is fine with the arrangement. Lyanna finds out she is not. Although she is coolly polite to Lyanna, she doesn't give her any of the warmth or kindness that she shows to everyone else, which Lyanna does not fail to notice.
  • Even her marriage to Rhaegar isn't what she thought it would be. He wants her to stop being a tomboy and be a Proper Lady now that she is a wife and queen, not just his lover, and he views their son as a spare-to-the-throne at best because he already has a firstborn.

Godzilla

Godzilla

• Abraxas (Hrodvitnon): It gets lampshaded by the characters themselves that they really didn't think through how they were going to introduce Vivienne Graham to her mother who thought she was dead and explain her transformation into half of Monster X alongside San, when Sam Coleman is bringing Viv's unaware mother to Castle Bravo's control room which has a video feed link to Viv and San.

Harry Potter

Harry Potter

• The Child of Azkaban: Trying to justify his decision to deny Sirius a trial, Crouch tries to use the latter's behavior when he and his wife last visited Crouch Junior but, before he says whatever was wrong with Sirius' behavior, he's reminded that he couldn't have seen anything without seeing there was a toddler with Sirius in Azkaban and thus he's basically "confessing" to have known about Harry's predicament for the last eight years and done nothing about that.
• The Chosen Six:
  • Dudley is far too eager to go after Harry once he feels a suitable amount of time has passed since his last attempt to attack Harry, ignoring how he would still be the obvious suspect for any adults involved.
  • It didn't seem to occur to Draco that Hagrid might try to get rid of the dragon he'd illegally hatched to avoid repercussions. Thus, rather than immediately reporting Hagrid after he discovers the dragon, Draco decides to wait a few days for the dragon to grow and thus give Hagrid more of a headache over trying to hide it, during which Hagrid succeeds in smuggling said dragon out of Hogwarts and disposing of any remaining evidence.
  • Draco and Lucius buy seven Nimbus 2001 brooms for the Slytherin Quidditch team simply because it's the newest, fastest non-professional model broom to have been manufactured. They, along with the rest of the Slytherin team, fail to consider that while a broom that prioritizes speed above everything else is ideal for a Seeker, other Quidditch positions require brooms that focus more on factors like reaction time for Keepers and maneuverability for Chasers. After their first match with their new Nimbus 2001s, the rest of the Slytherin team agree they were better off with their old brooms, and Marcus Flint chews Draco out for giving them such a bad deal.
  • After Draco complains to Narcissa about getting attacked by a Niffler (because he ignored Hagrid's clear instructions on what to do), Narcissa pressures the Ministry to send an official to inspect Hagrid's classes, with the clear aim of getting him fired at the first excuse. Rather than let Hagrid wallow in his misery, Draco decides to deliberately ignore instructions again in the next class, on Kneazles, and when he is naturally attacked by the creature, he attempts to play up the small scratch like it were a grievous injury. The official manages to get Hagrid hauled before a judge, whereupon Hagrid's barrister quickly makes a fool out of Draco by proving that his injuries were trivial and caused by his own stupidity.
  • Ludo Bagman is prone to this.
    • During the planning stages of the Triwizard Tournament, Ludo proposes the canon tasks. His ideas are immediately shot down by Barty Crouch, Sr., who points out how holding the Second Task and Third Task in the Black Lake and a hedge maze, respectively, would prevent anyone from even seeing the Champions. Moreover, using dragons in the First Task would pose a serious safety risk to not just the Champions but also everyone else present, given the Tournament was originally discontinued after a cockatrice got loose and attacked the judges.
    • He's caught completely flat-footed when Sirius and Diane angrily call him out for trying to get the Weasley boys to gamble on the World Cup finals. Apparently, it never occurred to him that people might object to him soliciting sports bets from minors.
    • Ludo's poor planning leads to there not being enough translators present at the Quidditch World Cup finals. He also approves of the Veela and Leprechaun mascots and their respective pre-game displays, failing to foresee the riot potential of Veelas effortlessly seducing men and Leprechauns bribing the audience with fake gold.
• As she finally figures out how to switch places with objects in Dodging Prison & Stealing Witches, Ginny unthinkingly casts the spell only to realize a moment too late she's about to switch places with an egg on a shelf in a muggle store.
  • Dumbledore planting a book on dark magic as part of his attempt to frame Harry for murder fails because the defense notes the publication number states it was printed less than three weeks before Harry allegedly wandlessly cast a spell in the book. According to an expert, learning to cast a spell wandlessly in six weeks is an impressive time, with ten weeks being average; it's outright impossible to manage in the time between when the book was printed and when Harry allegedly cast the spell.
• In Enter the Dragon, after Harry Potter becomes a dragon and starts living in a cave near the Forbidden Forest at Hogwarts, the nearby centaur tribe offer one of their maidens as a sacrifice to appease the Great Wyrm. Months later, said centaur maiden's father Bane hears his daughter is alive and that the Great Wyrm can change into a small human child. When he sees his daughter being ridden "like a common mule" by a human child, he angrily attacks and is promptly reminded that said child is really a dragon.
• A recurring theme in For Love of Magic is Harry Potter taking some action and realizing later he didn't think things through enough. Runes that age him faster also kick-start his libido, causing him to fantasize about his foster mother, and never stop aging him which leaves him looking roughly seventeen when he's thirteen. A rune designed to hide his mind in darkness from legilmency leaves him open to being corrupted by said darkness after he murders Peter Pettigrew. The latter is particularly dangerous as it nearly turns Harry into a dementor.
  • A narrowly averted example comes when Harry decides to crowdsource an arithmancy problem by posting it online as a mathematics problem. While he does get a solution, someone also warns him that the muggle government is aware of magic and they keep their eye out for such things, which can land him in very hot water.
• In snippet seven of Harry Potter and the Burning of Bridges, Hermione learns her blackmailing of Rita Skeeter isn't nearly as ironclad as she thought. Various Slytherin students spoke to Rita while she was in her animagus form, meaning they and their parents know about it. Rita spent her whole career making herself useful to powerful people and getting her off on a relatively minor charge would be simple for them. Furthermore, Rita has a contingency plan in place to have her animagus form backdated in the registry in case she's ever caught. The reporter rather casually informs Hermione that not only did her plan fail, but Rita could easily get her sent to Azkaban if she wished, though she chooses not to for her own reasons.
• Arjuna Belaji in Harry Potter and the Lack of Lamb Sauce tries to cheat during the MagicChef competition by switching hers and Millicent's meat pies because cooking beef goes against her religion and she figured that since it wouldn't benefit either, it wouldn't count as cheating. The judges calmly explain that she could have either explained beforehand and asked for a different ingredient, or made something else and explained why afterwards. Regardless of her intentions, she's disqualified from the competition for cheating.
• In Harry Potter: Master of Malicious Compliance, Voldemort's plot to use Harry to retrieve the Philosopher's Stone fails because Harry doesn't know anything about it. Rather than wanting to keep Voldemort from getting the stone, Harry's vision in the Mirror of Erised is dropping Draco off a balcony.
  • Likewise, Fudge and Umbridge's attempts to get rid of Harry by having him expelled for magic in a muggle environment by having a dementor attack him fails because they didn't know he was not at Little Whinging and it resulted in his cousin being kissed by the Dementor. This, combined with Umbridge's actions throughout the school year, ends with both of them arrested when it comes out it was an Assassination Attempt on Harry from Umbridge's own words.
• Snape in No More tries to curse Parvati Patil when the latter calls him and Dumbledore out for murdering a first year and covering it up respectively, and telling Susan to contact the aurors. It's only after Harry blocks the curse and students start drawing their wands that it dawns on the teachers that there's a few hundred students but only about a dozen of them.
• Oops has this happen for Harry's accidentally-made Horcrux. It gets Harry to brew and drink a luck potion of the "May you live in interesting times" variety by making him think it was a good luck potion. After Harry calls the Horcrux out on not only how messed up his luck usually is but that he's already in Britain during World War II, the Horcrux admits that it didn't think things through—but, in its defense, Harry rarely does either and it is a portion of Harry's soul.
• In The Peace Not Promised, the Evans family home is sold to a Muggle family after the sudden death of Lily's father. However, the backyard includes a shed for potions brewing, bespelled to be invisible to Muggles. And it turns out that one of the buyer's sons is magical, leading him to try to reach a shed that his siblings and mother can't see...and of course by that point, it's a bit late to remove the spell and have the buyer wondering where the shed came from.
• The Power of Seven:
  • In Chapter 57, Pansy Parkinson realizes that she's fallen victim to this when she's trying to infiltrate Harry's current 'harem' after staging a scenario where Harry will rescue her from a Death Eater dungeon, and yet her planned cover story involves her refusing to stab Draco Malfoy as a test of her commitment because she loved him too much (although all members of the harem already suspected that she was lying and only keep her around to Feed the Mole).
  • In Chapter 79, Harry is able to defeat Voldemort because Voldemort's possession of Dumbledore has deprived him of the immunity to Lilly's protection he gained when he took Harry's blood as part of the ritual to restore his own body.
• In This Means War there are a lot of these.
  • When Harry and Ginny start dating, her brothers are horrified, and try to get their hands on a unicorn (which can only be approached by virgin girls) to make sure nothing untoward has happened yet. They quickly run into the small snag that they can't get a hold of a unicorn because they don't know any virgin girls.
  • The first prank the brothers pull to try to get Harry to give up is to teleport him down into the Great Hall after a shower, wearing nothing but a towel. Ron forgot that Harry has been fighting hard for several years now, meaning he is extremely well-muscled as opposed to the skinny figure he was picturing. Harry's biggest problem after that is his legion of new admirers.
  • When Hermione needed a copy of her essay that she had lost, Ron casually gave her access to his mail account—forgetting that it would have records of the unicorn discussion he had with his brothers. Hermione is pissed that he told his brothers about them having sex, and throws her support behind Harry and Ginny in the war.
• Voldemort Goes Back To School: In a state of panic, Voldemort creates massive wards on an abandoned classroom door that only Dumbledore or Grindelwald could hope to break in the hopes of avoiding further interactions with Harry and Draco. He realizes the gaping flaw in his plan when he begins to worry that McGonagall might get around his wards if she were to transfigure the door into something else—and, as it is, Harry circumvents the door and all of his carefully-laid warding altogether by dropping in through the window on his broomstick. And because he's so heavily warded the door, he's essentially locked himself in.
  • Later Voldemort (in his schoolboy disguise) antagonized Snape, the only person who can supply him with the potions he needs, and hopes to just control him with blackmail and didn't think to Obliviate him afterward.
• When Harry confronts Dumbledore in What Was Your Plan? over him being a Manipulative Bastard who's controlled every aspect of Harry's life in order to eventually kill him, Dumbledore calmly takes apart his claim. Such a plan is needlessly convoluted compared to simply killing Harry from the start, and if needs to die at a specific point in time, then clearly someone who's managed to manipulate so much of Harry's life would have contingencies in place in case Harry ever found out. In other words, either Harry's wrong and looks rather foolish or he's right and there's nothing he can do about it. Harry was right.
• In the Alternate Universe Fic Wish Carefully, Harry decides To Win Without Fighting and surrenders control of Magical Britain to Voldemort and the Death Eaters after Dumbledore's death. He sets up the Rites of Parlay in which the Light supporters agree to leave Britain and take all the Muggleborns, half-bloods, and Squibs with them to their new society. Meanwhile, the Death Eaters are not allowed to interfere with the Muggle world in any way, or else they'll lose their magic. The Death Eaters happily agreed to the idea, only to realize too late that they didn't give any consideration to the logistics of what their victory would entail for them in the long term, much less how to run a country effectively. As a result, Magical Britain's economy has collapsed due to all the business owners and skilled laborers leaving the country, the Death Eaters' close relations and limited gene pool is resulting in worsening Generational Magic Decline, and Voldemort has become increasingly more unhinged the more he sees Harry Potter and the Order of the Phoenix succeed to the point that he even attacks people wearing glasses because he thinks they're mocking him.

Hellaverse

Hellaverse

• Unraveling Emotions:
  • In this AU, Love Is a Weakness that causes Sinners to lose their Resurrective Immortality. So when Vox confessed his feelings to Alastor, the Radio Demon immediately broke off their friendship, aiming to Break His Heart to Save Him. Years later, he plays a recording of that confession as a way at getting back at Vox for mocking his Moment of Weakness against Adam, assuming that Vox had long since fallen out of love and wasn't vulnerable anymore. He was wrong. And was, apparently, about the only person in Hell who couldn't tell that Vox still loved him, meaning he'd just revealed his vulnerability to a city full of Opportunistic Bastards. Rosie is only the first of many, many people to call him out on this.
  • While taking Vaggie to task for her overprotectiveness and hypocrisy, Vox intentionally cuts himself on her spear in order to drive home his point about her waving around an angelic weapon capable of permakilling Sinners so freely. Afterwards, he belatedly realizes this might not have been the smartest idea when the wound won't stop bleeding.

How to Train Your Dragon

How to Train Your Dragon

• In A Thing of Vikings, the Hooligans attacked Vedrarfjord just to get rid of the king after he attacked Berk, not realising until after the battle that they're now basically obligated to take over the city when it doesn't have a ruler any more.
  • Snotlout's two attempts at a-viking:
    • First, he and his friends steal a bunch of cattle. First, they never consider that being carried in the air by a dragon in the middle of a winter night would result in the animals dying, either from the cold or fear. Second, as Stoick notes when he confronts the boys, by using dragons, they've practically advertised that Berkians were involved, meaning the aggrieved village will know where to demand a geld in damages.
    • Later, after Stoick forbids any further raids against viking villages, Snotlout tries to get around this by raiding a Saxon Burh. Despite the raid being successful, not only is Stoick pissed that Snotlout defied orders, wording be damned, but, due to using dragons again, they've run into the same problem as last time, only this time, since the victims were a Christian kingdom, they'll most likely use the raid as an excuse to raze Berk to the ground. Plus, as Hiccup notes, both raids run the risk of encouraging theiving behavior in the dragons, which will not win Berk any friends.
• In The Treasure of Eyja Nott - a Modern AU with elements of The Count of Monte Cristo (2002)- Eret is accused of this when it's revealed that he sent his 'stepson' Nuffink to just be cannon fodder for Drago Bludvist's army when he knows that the boy's real father is leading the current assault on Drago's base, as they could use the boy as a hostage.

Invader Zim

Invader Zim

• Invader Zim: A Bad Thing Never Ends:
  • During the Irkens' siege of the Membranes' house in Chapter 2, Zim's final attack plan is to have Skoodge and Bob join him in operating a mech suit. However, he fails to account for the fact that each of its four limbs needs an operator, and there's only three of them, rendering it ineffective.
  • In Chapter 9, Dib tries to dramatically jump into the fight between the Irkens and Aldrich, only for Fizzmitz to grab him and point out that he was about to jump thirty feet and probably kill himself. Dib sheepishly admits that he got caught up in the moment.
• Top of the Line (Editor-Bug): Zim admits this to himself in Trading Dismay about his Role Swap Plot with Tenn, acknowledging to himself that while he thought about how to get close to Tak, he didn't put any consideration towards what to do after that.

Jackie Chan Adventures

Jackie Chan Adventures

• Queen of Shadows: During the Second Battle of Awaji, the human forces magically conjure a storm to fight the Shadowkhan navy in, in order to give themselves an edge... except the Shadowkhan fleet is manned primarily by Squid Khan, who unlike humans are not fatally incapacitated if they're thrown overboard or have their ships sunk by the storm. Which means the humans made things more difficult for themselves while barely inconveniencing the Shadowkhan.
• Webwork: The Yokai races all fled to the dimension known as the Emptiness in order to escape humanity's growing dominance of Japan. However, the Emptiness was lacking in food, and all the Youkai were too chaotic to coexist without humanity as a common enemy, so they all ended up turning on and feeding off of each other.
  • Jade, now a Jorogumo, puts on a human glamour in order to sneak around San Francisco and recruit minions. However, not only is she out of practice only using two legs, but she chooses to only wear a Badass Longcoat... and nothing else. Her stumbling around half-naked leads to her being repeatedly mistaken for a hooker who's either high or drunk, much to her annoyance.

Kingdom Hearts

Kingdom Hearts

• In Destiny Vault, after rescuing Aqua from the Realm of Darkness, the heroes decide to take her to Christmas Town to help her recover, not considering until it's too late that this will mean bringing her through Halloween Town. Notably, Jack Skelington calls them out on this.
  Jack: (shifts the bone structure around his eye socket to mimic a raised eyebrow) So, after you presumably rescued her from that trauma, you then proceeded to bring an emotionally-fragile woman to a town where everybody scares each other for a living?
  (The party averts his gaze, feeling ashamed of what they had just done.)
  Sora: Yeah... I guess we didn't really think this through all that much.
• In The Reluctant Father Universe, this is one of Xion's character flaws. In the first story, she considers shaking a Pepsi bottle until the lid pops off through carbonation. Ignoring that fact that that's not quite how carbonation works, she doesn't seem to realize how much of a mess this would result in.
• In A Second Twilight, Terra describes Master Eraqus' actions during Kingdom Hearts: Birth by Sleep as this trope.
  Terra: Let's just say sending a naive, gullible kid with knee-jerk respect for authority out to deal with villains wasn’t the best idea my master ever had and leave it at that for now.
  Regina: Speaking as a former villain, no, that was quite frankly a terrible idea. I know I would have taken full advantage of that.
  Terra: You — or, uh, a version of you — probably did. I'm pretty sure my bumbling trip through the worlds I visited were a laundry list of "dumb kid gets duped by every single villain he meets".

The Legend of Zelda

The Legend of Zelda

• And So We Fight has Zelda acknowledging the fact that disguising herself as Sheik to throw off her enemies wasn't the brightest decision ever since it only caused her own forces to get demoralized from her absence.
  Zelda: I wanted so desperately to reveal myself at the battle in the Valley of the Seers, but I just couldn't bring myself to do it.
  Impa: Why?
  Zelda: I do not know. I thought that my disappearance would lead Cia to believe that I was dead, and with me dead she would become overconfident, and thus prone to mistakes? I do not know, it was a terrible plan!
• In Blood and Spirit, after Zelda calls her out on making Link hide his corruption by Majora from her, especially since said corruption nearly caused him to kill Zelda, Terminus admits that it didn't occur to her at the time that Majora would try to have Zelda killed.

Love Hina

Love Hina

• For His Own Sake:
  • Naru impulsively punches a random man that she overhears teasing his wife, assuming that he was being perverted. This gets her arrested for assault. What's more, she later learns that said man happened to be a career advisor called in by her school, leading to her expulsion when they learn of the incident.
  • Su fails to understand the idea that 'Illegal means don't do it', and her decision to 'play' with others by unleashing a swarm of exploding mechas gets her arrested — and since she's the princess of Molmol and used their resources, she lands her nation in hot diplomatic waters, as it becomes an international incident.
  • Granny Hina reveals that she knew the truth about Keitaro's 'promise girl' all along in hopes of getting him to come back to the Inn. Instead, he's incensed to learn that she kept that information from him right up until she thought she could manipulate him with the reveal.
  • Kagura attempts to seduce Keitaro despite him already knowing that she's an Alpha Bitch... along with the little detail that she tries this after kidnapping him.
  • After getting kicked out of regular school and put into St. Clavius Academy because of her violent behavior, Sarah throws a nasty fit the next time she sees Seta and tells him she doesn't want him as her dad anymore. Furthermore, she brags that the Hinata Inn girls and Granny Hina will come to save her because they care about her more than Seta does. Seta decides to take Sarah's words at heart and leaves, fearing he was never suited to be a parent. After a few more weeks in St. Clavius, Sarah's begging to see him again only to learn from Haruka that he's not coming because she disowned him. And for added measure, Naru and the others won't be coming for her since they've all gone their separate ways. Sarah severely overestimated how important she was, realizing she was a Satellite Character the entire time and thanks to her selfishness she lost the one person who ever gave a shit about her wellbeing.
  • When her mother and step-sister try to assist her in a way she doesn't like, Naru rips into Mei with a Breaking Speech accusing her of all her own flaws, declaring they don't really love or care about her and cutting them out of her life. After Granny Hina cuts her off for good, she turns around and expects to be Easily Forgiven and welcomed back with open arms. Naturally, she's rejected, with her mother calling her out on assuming she could treat them so harshly, then turn around and act like nothing happened just because it'd be convenient for her.

The Loud House

The Loud House

• An Explosive Allergy has Lori gorging on a cake despite how she's allergic, continuing to eat even as her body swells up more and more. This eventually results in her Death by Gluttony.
• Syngenesophobia:
  • The whole Sister Fight Protocol was flawed from the start. Something the girls and parents realize too late. As Rita angrily discovers, the sisters did have a place for Lincoln in the protocol. Namely to use his room without asking him, taking his bed and sheets even though they had spares in the basement, and telling him to stay out of their fight.
  • They all realize that, despite how the intention behind not involving Lincoln in the protocol was to avoid dragging him into their fight, large parts of the code basically ensured that was impossible.^note Such as not allowing anyone usage of the bathroom, the kitchen, the television... Lincoln couldn't even use his own room or bedsheets!
  • Luna belated realizes that forcing Lincoln to attend the Sadie Hawkins dance with all of their friends could have gone really badly, as Tabby, Haiku, Polly and Giggles could have thought Lincoln was cheating on them with his other dates.

Macross

Macross

• The Macross Delta fanfic How Roid's Plan Could Have Backfired Horribly is a series of one-shots that this actually happened in canon by having one of the many holes in Roid's plan backfire, starting with Windermere's triumphal broadcast of Heinz's coronation and their claim to be the heirs of Protoculture be intercepted by someone who should never hear such a claim: a Zentraedi Main Fleet, whose commander remembers the time the Zentraedi were the Protoculture's Slave Mooks, and reacted by Orbital Bombardment with tens of thousands of heavy beam converging cannons, plus billions of smaller but still extremely powerful guns, until the planet Windermere shattered. Per Word of God, the only time the backfire wasn't caused by this trope is the one of chapter 6, as he could have had no idea that the Protodeviln felt in debt with the NUNS and would come to the rescue when their enemy started messing with the Fold.

Marvel Universe

Marvel Universe

• A Crooked Man: After Johann restores mutants of their powers, he then later realized that he also gave powers back to some people (like Beak) who were really glad theirs are gone. He soon has a chance to fix this when meeting with the X-Men.
• Civil War Hulk: Spider-Man, of course, when he grabs onto the Hulk's neck.
  Spider-Man: I got him! I got him!...What the heck do I do now?

Marvel Cinematic Universe

Marvel Cinematic Universe

• In If I Could Start Again, Loki amuses himself by agitating Banner about what traveling through the Bifrost is like. Right as they're being transported, Banner can't take the stress anymore and transforms into Hulk, causing Loki to exit the Bifrost at a full sprint and screaming for help.
• Turning Tables: In Chapter 40, it is revealed that Peter's teacher Rhett Leak had drugged Peter and tried to take his glasses with the intent of gaining control of EDITH. What he did not seem to count on was the fact that Edith would not actually listen to him, nor would he know that Peter's metabolism would keep him conscious long enough to activate a security protocol that would send a drone to incapacitate him and call for help.
• Natasha Romanov in The War Is Far from Over Now never considered what would happen if she dumped all of SHIELD's files online. While HYDRA had infiltrated a great deal of the organization, there were still hundreds of loyal workers who had no idea and were burned as a result. In the end, most of them refuse to rejoin SHIELD and instead stay with Stark Industries after Tony Stark gave them jobs and new identities while saving as many agents as he could. When Natasha recognizes one of Tony Stark's employees as Agent 33, she tries to confront the woman about what she's doing, only to be informed that Agent 33 was tortured to death by HYDRA and her name is Kara Palamas. Kara then gives Natasha a Slasher Smile and informs her she needs to think beyond the end of the mission.

Miraculous Ladybug

Miraculous Ladybug

• Burning Bridges, Building Confidence:
  • Chat opts to sit on the sidelines and watch during battles, declaring that he'll only step in to help if Ladybug admits that she needs him and agrees to get together. He openly admits this to an angry civilian while failing to notice that Master Fu is right beside him. As a result, Fu selects a new permanent bearer for the Fox Miraculous: somebody who takes the job far more seriously, so that Ladybug has a more reliable ally. One who warns Chat that if he doesn't shape up, he's running the risk of losing his own miraculous.
  • Alya reacts to the appearance of a new Fox heroine by penning and posting an article accusing Vexxin of stealing the Fox. Her one-woman crusade against the new bearer only serves to convince Ladybug that she's not worthy of being trusted with any miraculous, especially after she's akumatized into Rena Rage. Ladybug spells out for her how her own actions led to both her and Carapace being permanently retired, since she also knows his secret identity and could compromise it. Much like she did her own with her Motive Rant.
  • When two of their schoolmates get akumatized, Adrien decides to go looking for Marinette... so that he can accuse her of causing it. When the akumatization happened right after he got into an argument that involved both of them. And his search for her causes him to run right in front of both akumas, getting him caught.
  • In order to 'punish' Marinette and Cole for all their supposed crimes, Alya sharpens her fingernails and lunges at them in the middle of their classroom. Not only does she get her nose busted, she gets into serious trouble for injuring Cole. Not just at school, but from her furious parents, who ground her and put the Ladyblog on indefinite hiatus. And there's how Cole's mother plans to charge her with aggravated assault, among a multitude of other charges for the other stunts she's pulled...
  • Lila brags to her classmates that she'll be out of the country over the break, only to realize too late that unless she can come up with some winning excuse as to why she's still in Paris, she's effectively stuck inside. Including having to lie to her mother and faking plans about going out with friends so as not to arose her suspicion and concern over her staying home the whole time.
  • Angry at Vexxin for repeatedly siding with Ladybug and 'making him look bad' by calling him out on his self-centered attitude, Chat decides to stand aside and watch her get ganged up on by a trio of powerful akuma. What he fails to consider is that, as always, Hawkmoth wants said akuma to get his ring — and since there are three of them, they're easily able to go after him as well. All he accomplishes by refusing to help Vexxin is pissing her off even more and convincing her, Ladybug and their allies that they need a more permanent solution to the problem he poses.
• Cat Out of the Bag has Adrien become a victim of this twice over, though thanks to Second Chance he's not aware of part of it. During the battle with Wishmaker, he deliberately gets hit by the akuma's power in order to learn what his childhood dream was, without considering how this might compromise his Secret Identity. Both he and Ladybug wind up being hit; if not for Viperion's presence, Shadow Moth would have learned who they were. Adrien then impulsively decides to abandon the Black Cat Ring on a random rooftop out of anger over Ladybug working with other heroes... which convinces Viperion that Adrien isn't worth covering for anymore, as he's just demonstrated how little he cares about actually being a hero.
• A Change of Heart has Marinette ask Eagle to use Liberation to temporarily clear her mind of all romantic attachments so that she can speak to Adrien without her crush making her tongue-tied or otherwise getting in the way. However, she failed to consider that this would also cancel out her feelings for Luka. This ultimately works out in her favor, though, as having the chance to evaluate both relationships without her crush on either boy getting in the way helps her realize that she's happier with Luka.
• Chicken Scratch Rules has Gabriel attempting to use the Rooster Miraculous as an instant "I Win" button... while completely failing to grasp that it works on Exact Words. This culminates in him being Hoist by His Own Petard via granting himself the power to grant Wishes, which Orikko immediately uses to make him turn himself into a chicken.
• Compartmentalization: Adrien quits being Chat Noir and has Plagg take his Ring to Ladybug along with a resignation note. While it's heavily implied that he expects her to chase after him and plead for him to come back, Marinette has grown inured to his attention-seeking tricks. He also failed to consider that Plagg might tell her about several of the stunts he's pulled behind her back, such as threatening to quit when Syren was flooding Paris, further convincing her that she's better off without him.
• In Court Summons, Adrien participates in a plan concocted by Lila and several temporary Miraculous holders to confront somebody they suspect to be Mayura, holding a Kangaroo Court before having Ladybug place a curse upon the culprit. Not only does he cooperate despite knowing Lila's a Manipulative Bitch, he doesn't bother finding out just who they're accusing, causing him to have an Oh, Crap! moment when Marinette is dragged into view... since he already knows Marinette is Ladybug.
• In Cut My Life Into Pieces, This Is My Last Resort, Marinette is driven so far up the wall from all the pressures of being Ladybug that she makes the decision of faking her death and become Ladybug full-time at least until Hawk Moth is defeated. Which she did without thinking that she would drive almost everybody who loved her half mad with grief (she kept her parents in the loop, but they cannot fake grief to save their lives, which eventually becomes too suspicious for Adrien) and gave Lila more ammunition to manipulate them. Her method for faking her death involved her faking becoming collateral damage to an Akuma attack and that the Miraculous Ladybug power could not bring her back for some reason, which leads to Cat Noir becoming very barely able to tolerate her as a partner. She eventually thinks of revealing herself to Adrien, but Master Fu bluntly tells her that there is no way she can drop that bombshell without making Adrien mad. Nino eventually tells Marinette that she screwed up the pooch big time and he hopes she grovels a little trying to earn Adrien's forgiveness, because Nino seriously expected Adrien to commit suicide from how depressed he looked over the last two weeks.
• Dad Villain AU:
  • As part of her campaign to utterly humiliate Marinette, Chloé gleefully posted pictures and videos of her bullying and pranks online. These pictures and videos then serve as evidence of said years of bullying when Tom takes the Bourgioses to court, forcing her father to desperately bargain in order to protect his daughter from ending up with a criminal record.
  • Rolland decides to exploit his son asking him for help with the bakery while Sabine is hospitalized by attempting to force Marinette to follow HIS recipes and traditions in order to "prove their superiority". He's completely taken aback when Marinette stands up to him, pointing out that it doesn't matter what he prefers — their customers expect bread made with rice flour, not wheat. And if he can't follow directions and provide the product they're paying for, then he might as well leave.
  • Emelie acts oblivious to Nathalie's feelings while also using them to string her along, without considering that this might result in Nathalie eventually falling out of love with her after realizing she was Loving a Shadow. She's caught completely off guard when Nathalie hints that she's interested in somebody else.
  • Gabriel accidentally reveals his knowledge of the original timeline by overreacting to a display of Miraculous-themed baked goods at a charity ball. When Viceroy confronts him, he proceeds to assume the new Butterfly holder intends to make a Wish just like he did and openly brags about his past victory, revealing the exact terms of his own Wish. Not only is he failing to consider that Viceroy may have set that trap specifically to lure him out of hiding so they can take revenge, he ignores how they're surrounded by witnesses, including his wife and son.
• Dodged a Beetle: As part of her plan to hog the credit for throwing a birthday party for Adrien, Lila skips class in order to swing by the Agreste Manor and suck up to his father. Gabriel immediately asks her why she isn't in school, with her blatant delinquency adding to the incredibly poor impression she makes on him.
• Everything You Deserve: Chat Noir betrays Ladybug's trust and uses the combined Earrings and Ring to make a series of selfish Wishes. However, he fails to consider how poorly phrased his requests are, creating a Self-Inflicted Hell where he is, in fact, getting what he deserves.
  • I want to be able to transform whenever I want so I can have fun: Instead of remaining a Nominal Hero, Adrien finds that he's now known as a supervillain who uses the Peacock Miraculous to wreak havoc throughout Paris.
  • I want Ladybug to be my loving, devoted, doting girlfriend: Marinette is no longer Ladybug in the rewritten reality; instead, that role is filled by Chloé, much to his dismay. Meanwhile, the girl he felt entitled to has become Chat du Lune, who regards him as her Arch-Enemy.
  • I want my mother back and for her and father to be my perfect parents: Emilie is alive, but her relationship with Gabriel is just a Happy Marriage Charade — Gabriel treats her as nothing more than a Trophy Wife, and she's cheating on him with Nathalie. The two are only remaining together for Adrien's sake, and Emilie plans to divorce Gabriel the moment their son is finished with school.
  • I want to stop doing photoshoots and instead get to do whatever I want: Since he's not a supermodel anymore, he loses the privileges that came with it. He also doesn't know what to do with his life anymore, since being a supermodel was all he had.
• Feralnette AU:
  • When Lila claims that Chat Noir told her that he was planning to confess his feelings to Ladybug at the fair, Alya happily posts the 'big scoop' on her Ladyblog. Marinette observes that she had better hope Ladybug doesn't read the article, as she likely wouldn't be too thrilled at being gossiped about, or dealing with pressure to 'accept his feelings' despite repeatedly making clear that she's not interested in a Relationship Upgrade. She even teases the notion of Ladybug taking the Ring away to make him stop harassing her.
  • The aforementioned article also attracts plenty of would-be gawkers to the fair... and Hawkmoth's attention. Turning an event which was meant to be a fun distraction for children into a potential hotbed for akuma activity.
  • Alya tries to defend Lila from Ladybug and Chat Noir's anger over her Blatant Lies by citing her 'lying disease'... unintentionally revealing that she knows about that particular excuse. Ladybug promptly points out that this hasn't stopped Alya from using Lila as a 'trusted source', despite knowing that she supposedly has trouble discerning fact from fiction.
  • Played for Drama during the Birds of a Feather arc. As soon as Lila learns that Felix is nonbinary, she immediately threatens to 'express her concerns' about them using the bathrooms to the school board... unless, of course, they do what she demands. She's so gleeful about using this as leverage against them that she doesn't spare a single thought to how brazenly she's making these threats, or who she's making them in front of. This turns out to be beyond Alya's capacity to rationalize away, spurring her to immediately — and violently — confront and call her out.
• Go Big or Go Home: Monarch uses Sublimation to create an akuma so big it won't fit in Ladybug's yo-yo to be purified. It doesn't occur to him until it happens that Cat Noir can still destroy the thing in one touch with Cataclysm.
• Hero Chat:
  • This applies to Lila's lies in general, though special mention goes to her attempts to frame Marinette for cheating, assault, and theft, which all quickly fall flat.
    • Lila steals the answer sheet for a mock exam, plants the stolen answer sheet in Marinette's bag, then leaves an anonymous note tipping off Ms. Bustier. When Ms. Bustier finds the answer sheet in Marinette's bag, the rest of the class quickly defends Marinette, insisting that it isn't like Marinette to cheat, and that she wouldn't need to anyway because she always does well in the class. Chloé in particular points out that stealing an answer sheet just to cheat on a mock exam that doesn't even count for a grade is very risky and clearly not worth the minimal rewards, especially for a top student like Marinette. She also notes that if Marinette had stolen the test answers, she would've thrown them away immediately after the exam rather than still hang on to such incriminating evidence long after the exam was over. Even Ms. Bustier silently concedes that the evidence against Marinette makes no sense.
    • Lila's plan to frame Marinette of assault involved just collapsing at the bottom of the stairs while Marinette is at the top, then screaming to draw people's attention. She didn't seem to consider how falling down an entire flight of stairs would result in serious injuries, which she would also need evidence of. It doesn't take very long for everyone to realize she's completely uninjured, and that her fall was faked.
    • To frame Marinette for theft, Lila leaves her foxtail pendant in Marinette's locker, then accuses her of stealing a family heirloom necklace. However, her foxtail pendant is actually from the previous year's Agreste jewelry line, something that Chloé recognizes almost instantly. Thus, the class is able to convince the staff with relative ease that the necklace in Marinette's locker was really a present from Adrien, and that Lila mistook it for her own necklace.
    • Downplayed with her claim about having a lying disease. While it does save her from the bigger, more immediate problem of being confronted by her classmates and the staff for framing Marinette of theft, assault, and cheating, it also vindicates Marinette's previous accusations of Lila being a liar. Moreover, it also gives Marinette and the rest of the class opportunities to cast doubt on Lila's stories without looking like jerks, as they're now able to pass it off as concern that her disease is acting up.
  • Hawk Moth gets this reaction from the team in regards to Costume Change. Essentially, he thought giving an akuma the power to inflict Becoming the Costume on people and not much else combat-wise was a good idea... and said akuma was unleashed upon a fan convention, where many people were dressed as characters who could have easily kicked his ass, let alone the ones already cosplaying as Paris' heroes.
• I See What You Do Behind Closed Doors has this as a Running Theme with Adrien:
  • Firstly, he decides to start dating Marinette purely because she looks like Ladybug, letting him fantasize about being with the object of his affections... whom he freely continues to pursue, even after sharing his Secret Identity with Marinette. Somehow, he's caught completely off guard when Marinette inevitably confronts him over this.
  • Adrien only told Marinette he was Chat Noir in the first place because he'd falsely claimed that the only reason he hadn't intervened when the others were bullying her was because he had something on his mind. He hadn't considered that the naturally empathetic and caring Marinette would immediately ask what was weighing so heavily on him, forcing him to come up with a convincing excuse, with that being the first thing that comes to mind.
  • Adrien also hadn't considered that Marinette might expect him to actually show support for her now that they were dating, having fully expected that he could continue paying empty lip service to the idea.
  • There's also the matter of Lila. Adrien pressured Marinette to stop trying to expose Lila without considering that the truth might come out in some other fashion — much less the idea that when it did, Lila might reveal that she knew about his Betrayal by Inaction and reveal it to the whole class.
• In the one-shot I'm In Love With Another Boy, Ladybug accidentally lets slip that she's got a crush on Adrien, so Chat Noir starts playing a Deliberately Distressed Damsel in order to force her to save his civilian identity. Not only does this cause her to start falling out of love with Adrien, it also means that Chat Noir effectively stops showing up to fights on time, even missing out on battles entirely. He doesn't consider this to be a problem until Ladybug confronts him about it and reclaims the Ring.
• Juleka vs. the Forces of the Universe:
  • Master Fu tries to praise Ladybug and Chat Noir's teamwork immediately after the latter outright refused to do anything about Shipper, forcing Ladybug to fight the akuma completely alone. Juleka is deeply unamused by their Selective Obliviousness.
  • Hawkmoth creates a dragon sentimonster with a powerful roar to back up Darkblade. He failed to take into account the way that said roars would reverberate and echo inside the armor of Darkblade's brainwashed victims.
• The Karma of Lies:
  • One of the reasons why Adrien decides against exposing Lila is because he presumes that her scams can't possibly impact him, since he already knows that she's a Con Artist. Despite this, she convinces him to help her out by claiming to have seen the error of her ways, only to promptly betray his trust — something he makes even easier for her by foolishly entering the passwords to the Agrestes' emergency fund account right in front of her. Lila herself is completely taken aback by his lack of precaution.
  • Something else Adrien fails to consider is how suspicious it looks for him to suddenly start claiming that she's a Consummate Liar after she betrays him. As the Agreste family lawyer eventually spells out for him, even if the police believe his story, he's literally admitting to them that he was willing to stand by and let his classmates be conned for months, which doesn't say anything good about his character.
• In Karmic Backlash, a Recursive Fanfiction to The Karma of Lies, Marinette ends up with getting a truly excessive and destructive Humiliation Conga when Lila decides to react to the Paranoia Gambit Marinette used on her in the previous tale by returning to Paris and stealing the Miraculous Box, which leads to everybody else in the cast discovering exactly how little Marinette cared to punish a sociopathic con artist who had ran away with 50 million Euros over getting even with Adrien and his (comparatively smaller) sins.
• Karma Overbalance, a Recursive Fanfiction and continuation to The Karma of Lies, has Marinette discovering the hard way that the (highly ambiguous) Paranoia Gambit she tossed to Lila as a warning in the previous tale was a very bad idea because Lila, distressed at not being the one in control, came back to Paris looking for material to blackmail Marinette and this gets her killed by Adrien, who reached the Despair Event Horizon after the thorough Humiliation Conga he suffered.
• A Lady's Scout (and the Salt within her Soul): After Rena Rouge gets replaced by a new Fox, Lila claims that she had a falling-out with her 'former friend' Ladybug, but that Marinette would have encouraged the heroine to dump her. Once the rumors spread, most of the class promptly turn their backs on Lila in favor of trying to worm their way back into Marinette's good graces, assuming that she can help them catch Ladybug's eye and become temporary heroes. Things only get worse for Lila when Marinette 'accidentally' hints that "Ladybug's stalker" is in their class, torpedoing what remains of her reputation.
• The Lament Series (ChaoticNeutral):
  • In Gabriel's Lament, Plagg accuses him of having a Complexity Addiction, never taking the time to consider the potential consequences of his schemes. Such as when he suspected his son might be Chat Noir, and threw him off a building to test it — not only could Adrien have been seriously injured, if not outright killed, if he had transformed, it would have exposed his Secret Identity to the rest of the world as well. This would have made him a target for anyone hoping to seize the power of the Miraculous for themselves.
    • He attempts a "I Know You're in There Somewhere" Fight on his akumatized son... without considering the fact that Adrien was akumatized due to their strained, distant relationship. Despite Plagg repeatedly calling him out on his Parental Neglect and controlling abuse. Suffice to say, it doesn't go well.
    • Plagg also points out the major issues with his plan to reactivate Ladybug and have HER save everyone. Namely the fact that doing so would bring them to Hawk Moth's attention, and could lead to her suffering the same fate as Adrien.
  • In Chloé's Lament, Hawk Moth and Mayura never considered the possibility that Miracle Queen might turn her Mind Control wasps onto them, usurping control of the whole operation.
    • Chloé really doesn't put much thought into her Wish, failing to consider that swapping places with Marinette might mean giving up her status as the Mayor's daughter... something she's constantly exploited.
• Leave for Mendeleiev: Lila is hit by this twice over in "Mime Your Own Business":
  • Firstly, she doesn't consider that her claims that she's Ladybug's best friend could reach the superheroine's ears... or that Hawkmoth might learn about it. When he akumatizes Mylene's father into the Mime, he immediately has him take Lila hostage.
  • Secondly, she expects Adrien to keep her supposed 'secret identity' as the Fox Heroine Volpina secret. So when Chat Noir shows up at the hostage situation and happily — and loudly — reassures Ladybug that she can save herself, she's caught completely off-guard and is forced to admit the truth.
• Luckier Without plays this for drama, along with using it for character contrast:
  • In the immediate fallout of Season 4's finale, Chat Noir follows Ladybug, discovers her Secret Identity, and immediately reveals himself as Adrien to her, believing this means he can finally get that Relationship Upgrade he desires. Instead, this Internal Reveal proves to be the final straw for Marinette, who's furious at his Skewed Priorities and refusal to take any of her warnings about why they needed to keep their identities hidden from each other seriously. Rather than getting what he wants, he pushes her past the Godzilla Threshold, as she decides to give up being Ladybug and surrender her role as Guardian.
  • By contrast, Marinette and Luka work hard to avert this as they prepare to put her plan into action, setting up several contingencies to try and ensure that her impending memory loss won't make matters even worse in the long run.
• A frequent refrain in Manynette Sodium Rich Edition. Marinette's classmates cause her akumatization into the titular Manynette by pressuring her to change the plans for their big school trip on Friday from an overnight stay at the Louvre to a trip to Cote d'Azur. Not a single one of them considers just how much work organizing either of those excursions would be, much less having to cancel one at the last second while trying to arrange the latter at the last minute.
  • Alix completely failed to consider that her father might be looking forward to hosting the event, or that he had to make special arrangements of his own, such as bringing in extra staff for that night.
  • When Adrien tries suggesting that they can just push the trip back, Chorinette reminds him that they agreed upon that weekend specifically because it fit everyone's schedule. Including his own, with her asking outright whether he believes his father will agree to give him another weekend off so easily.
• Marinette Dupain-Cheng's Spite Playlist: As one of her Celebrity Lies, Lila tells her classmates that she's going to be spending the summer break in Achu. What she fails to consider until it's too late is that in order to maintain that lie, she's going to have to stay in self-imposed house arrest for the whole holiday. Can't risk anybody seeing her in Paris when she's supposed to be out of the country, after all.
• Marinette's Week Off:
  • The story hinges upon the idea that Miss Bustier and her students are used to taking advantage of Marinette being The Reliable One, leaving them unprepared to handle a busy week full of major school events while she's away on vacation. While Alya and most of her classmates don't pay attention to any of the warnings Marinette gives about her upcoming trip, Miss Bustier doesn't have the excuse of being caught unawares and simply fails to consider that as their new and inexperienced class president, Alya might need her help and support as their teacher. Her blatant neglect results in all those big events going horribly wrong — so horribly wrong, in fact, that it gets the attention of the school district, resulting in them cracking down hard upon Françoise Dupont in the sequel to rebuild its ruined reputation by ensuring the rules get enforced and teachers like Bustier actually do their jobs.
  • On top of insisting that they don't actually need Marinette's help with any of the tasks she used to handle, Alya doesn't bother making any arrangements of her own until the very week that everything comes due, resulting in a LOT of paperwork going uncompleted and many critical things either left entirely unaddressed or shoddily handled at the last possible moment.
  • In Marinette's Life (After the Week Off), Lila blatantly lies about a new song Jagged Stone wrote before said song is released, causing her to get several critical details wrong. Such as claiming that "Queens Don't Cry, Princess" is a "party song" rather than an emotional, inspirational ballad.
• Miraculous Ladybug Salt-Shots:
  • Bitter Victory has Lila replace Marinette as their class president, only to discover that everybody naturally expects her to step up and do an even better job than their "everyday Ladybug". She ultimately finds herself on the wrong end of an Hourglass Plot, struggling with all the responsibilities Bustier foists off on her.
  • "Being A Good Example Isn't So Easy, Is It?" takes a similar tack, with Bustier making Chloé the new class representative after Marinette transfers to another class. Turns out that all her coddling and letting the Rich Bitch get away with bullying her classmates has left her with a Spoiled Brat who outright rejects the suggestion of doing any work, casually informing the teacher that if she tries the same guilt-tripping tactics that she used on Marinette on her, she'll call in her father and get her fired.
  • Where You Stand has Lila overhear Marinette and Nino confronting Alya over her Doublethink and refusal to take a side and stick with it. She leaves the scene, then wanders back in acting confused over the argument, simply because she wants to watch Alya squirm. Both are taken aback when Marinette challenges Alya to research Lila's claims right then and there — and when Alya balks, Nino starts searching online instead, something Lila clearly didn't anticipate.
  • A Price to Pay: Adrien betrays Marinette, helping his father literally rip the Earrings away so he can make his selfish Wish. He arrogantly assumes that since the Wish will rewrite reality, he and his father will be able to completely escape any consequences for their actions and that he'll be able to force Marinette into a relationship, without considering that the Wish might ensure they're hit with Laser-Guided Karma. He then expects Marinette to help him "fix" the unexpected side-effects of their Wish, even after learning that she has Ripple-Effect-Proof Memory and is fully aware of all the horrible things he's done.
  • In Masked Hearts, Adrien is so convinced that he and Ladybug will get together once Hawkmoth is finally defeated that he immediately detransforms right after the Final Battle and asks her out. Ignoring the fact that there are dozens of witnesses around, including a film crew. He also ignores the tiny little detail that he's been dating Kagami for the past two years, and that Ladybug KNEW he had a girlfriend, as he'd told her about their getting together in an attempt to make her jealous. Suffice to say, neither Ladybug or Kagami are impressed.
  • The Fake Ladybug is a doozy, as Lila pays a New Transfer Student named Elayne to pretend to be Ladybug and back up her claims of being besties with the superheroine. Not only does Lila not consider how easily this could be disproven, the only members of the whole class who recognize the problems with this whole scenario are Marinette and Adrien. Alya also promptly posts the "big reveal" on her blog, spurring Hawkmoth himself to come crashing into the school, gloating about how idiotic Elayne was without realizing that the whole thing is just a Blatant Lie. Upon ripping her Earrings off and realizing he was fooled, he promptly makes Implied Death Threats towards the poor Unwitting Pawn.
    Hawkmoth: Ladybug, how foolish of you to reveal yourself to a bunch of teenagers who know nothing but how to gossip! It's very cocky of you to reveal your identity to a camera with the expectation of beating me!
• In The Naked Truth, both Adrien and Marinette are bathing when there's an Akuma attack, and neither think to stop and get dressed before transforming. Following the resulting embarrassing situation, Tikki, Plagg, and Master Fu all tell them that they could have afforded to wait five minutes to put some clothes on before going to fight.
• The One to Make It Stay:
  • Chat Noir gets upset at Ladybug for turning him down and refuses to work with her during akuma attacks, accusing her of not treating him like a true partner. Not only does he fail to consider that his belligerent behavior isn't helping his case, he doesn't factor in the fact that she has the ability to recruit other temporary Miraculous holders... or that his childish, petty behavior only encourages her to trust and rely upon them more and more.
  • After Marinette rejects her attempt to force her into Adrien's space at the wax museum, Alya decides to ensure that she can't dodge her next Zany Scheme by calling all their other girl friends to the bakery for an 'emergency meeting', strong-arming her way into Marinette's room, and rejecting her attempts to deescalate the situation. This does convince Mari that they need to have a serious discussion... but not the kind Alya was anticipating. Rather than caving to pressure, Marinette stands her ground and calls her out on her control issues and refusal to listen to what she actually wants, straining their relationship further.
• Of Patience and Pettiness: After Marinette exposes Lila's true nature to the whole class, Adrien tries to shame her for not listening to his advice about 'taking the high road'. He doesn't think anything about scolding her in front of everyone, meaning that Nino and the rest of their class learn that he knew about Lila all along. Quite understandably, none of them are happy that he wanted to keep them in the dark.
• Rate This (Trust is Hard to Come By):
  • As Chloé smugly points out, Marinette arranged Alya's first interview with Ladybug... meaning the Intrepid Reporter knew her bestie had some kind of connection with the superheroine. Yet when Lila falsely claimed to be friends with Ladybug herself, Alya dismissed all of Marinette's efforts to warn her as mere jealousy, never considering that she might be telling the truth... or that anything she did to Marinette would get back to Ladybug.
  • On a larger scale, the whole class failed to consider that Marinette might show anyone any of the nasty messages they were sending her, or that they were creating evidence of their own cruelty with every word they wrote.
  • Although Lila notices the giant, blood red -51 floating over her head while checking herself out in a mirror, she dismisses this as an Unusually Uninteresting Sight, attributing it to some random akuma attack without sparing any thought as to what said number or its foreboding color might actually mean.
• Recklessness plays this for drama: Alya impulsively decides to steal the Earrings and Ring and make a Wish to discover Hawkmoth's Secret Identity, without considering the potential consequences of using a power that can rewrite reality for such a mundane request.
• Salt Trope Parody Oneshots uses this to deconstruct Salt fics by having Marinette (deliberately characterized as an exaggeration of how salt fics act) not consider alternate consequences.
  • In the first chapter, Marinette decides that since her class doesn't believe her about Lila, she'll resign from class president and see them fall apart. She didn't expect that Chloé and Sabrina would just take back the position and run it as successfully as they have in years past.
  • She then isolates herself from her friends and expects them to crash and burn without her being their reliable one. She didn't expect them to continue to do fine on their own talents and merits, even finding out on their own that Lila was lying.
  • When they go to apologize to her about not believing her, Marinette refuses and expects them to beg for forgiveness. She's surprised that they would be understanding enough about their mistakes that they would give her time to cool their heads.
  • In chapter 3, Adrien points out to Marinette that his "high road" advice, while extremely flawed, was only based on the premise that Lila was a clingy Attention Whore and not as malicious as Marinette knew she was. Marinette didn't anticipate that not telling her friends about Lila's true nature would be considered just as much, if not more, of a betrayal.
  • In chapter 4, Marinette decides to expose Lila by transforming into Ladybug in front of her and showing that they aren't best friends. For all her belief that her classmates are "assholes" for not believing her about Lila, it never occurred to her that if they were they would be vindicative enough to record and expose her Secret Identity on the internet. This is exactly what Lila does and allows Hawkmoth to find out who she is, allowing him to steal the Miraculous Box and potentially her Miraculous.
• Scarlet Lady:
  • Chloé's attempt to plagiarize one of Marinette's designs for the Bowler Hat Contest runs into this twice over. Not only does Marinette secretly incorporate her name into her designs, which Chloé's tailors unwittingly reproduce, she also points out that she has all of the original sketches.
  • When Marinette is handing out free croissants as part of her father's presentation for Career Day, Chloé sneers at Marinette not to get her 'poor grease' near her. Marinette complies by simply skipping over her entirely.
  • During "Gamer", Chloé tries to con her way into the bakery by claiming she's got a school project with Marinette. Sabine points out that she's fully aware of how much Chloé has bullied her daughter over the years, as well as the fact that Chloé had Sabrina get into the bakery under similar pretenses in order to snoop around Marinette's room not that long ago.
  • Chloé spurs Juleka's akumatization into Reflekta by locking her into the bathroom. She subsequently complains about the poor timing of said akuma, ignoring how she created her in the first place.
  • Lila falsely claims to be Scarlet Lady's BFF while having no idea what the superheroine is actually like; as a result, those who are more familiar with the Nominal Heroine are put off by her claims.
    • Lila also fails to consider what might happen if Adrien realizes that she 'borrowed' his book, and is caught completely off-guard when he calls her out on the theft, as well as the Contrived Coincidence of her supposed 'Secret Legacy'.
  • After Marigold saves Adrien from Riposte, Scarlet Lady follows her... leading the akuma right to where she'd hidden him.
    • In the same episode's denouncement, Plagg points out to Adrien that if he hadn't convinced D'Argencourt to let Kagami onto the Fencing Team, he could've gotten Marinette to join instead.
  • In "Troublemaker", Marigold puts glue on her Miraculous so that the akuma will get stuck while trying to remove it. However, the amount of glue she had to use to cover the Bee Comb means that Troublemaker's hand ends up being stuck to her head.
  • "Prime Queen" has Nadia attempt to court ratings by presenting the heroes with pictures implying a romantic connection between Chat Noir and Marigold. Not only does this deeply upset both of them, Scarlet Lady is outraged over not being the center of attention and declares the interview over, with all three storming out.
  • In the tags for Part 8 of "Gorizilla", the fic's author wonders why Gabriel isn't concerned that, if Chat Noir's identity is exposed to the whole town, whoever gave him his Miraculous might get it back before he has a chance to.
  • "Sandboy" revolves around the kwamis gathering together on Nooroo's birthday and combining their powers in an attempt to contact their kidnapped brethren. None of them consider that if Hawkmoth happens to be transformed at the time, they might accidentally contact him instead.
    • During the denouncement, Chloé's response to hearing that Tikki was trying to determine the supervillain's location is to angrily declare that she doesn't want to find him, as no more supervillain means no more glory for her! Hearing this sends Tikki into a Tranquil Fury, and it's clear that Chloé hadn't considered that her kwami might not approve of her self-centeredness...
  • Throughout "Party Crasher", Kim, Nino and the other boys repeatedly stumble into this, as they keep digging themselves into deeper and deeper trouble with the girls by not only ditching them, but lying to them about why they didn't show up, as well as taking steps to exclude them if they do show up at the Agreste Manor. Never mind that even if they successfully manage to keep them out, they'll have to leave the building eventually...
  • In order to akumatize Audrey into "Style Queen", Gabriel intentionally slights her at the fashion gala. While not present himself to face her wrath, he thinks nothing about the fact Nathalie and Adrien will be there, potentially placing them right in the line of fire. Sure enough, Style Queen immediately targets "Agreste Junior", and Hawkmoth complains that Nathalie will punish him for getting his son Taken for Granite.
  • "Queen Wasp" features Chloé topping all of the above when she decides the best way to convince her mother that she's spectacular is by revealing her secret identity to all of Paris. Not only is Audrey unimpressed, this brings the consequences of her actions throughout the entire series crashing down upon her head all at once — especially after Alya and Nino point out that she'd previously made a big deal about how she intended to leave Paris for New York. Meaning that she'd been bragging about her intent to abandon Paris entirely, leaving them without the Ladybug "heroine".
• In Squad Goals, Nathalie notes Gabriel's recent Akumas have lacked creativity, so he decides to do a Design-an-Akuma contest on social media where the winner (the entry that gets the most likes) gets Akumatized into their design. Gabriel didn't consider the consequences of this, as the vast majority of submissions are Akumas with powers to target Hawk Moth specifically. Gabriel has to cheat and retroactively alter the rules so Akumas targeting him don't count.
• In Tattered Remains of Broken Dreams (Yours, Not Mine), Marinette's classmates decide to punish her alleged bullying of Lila by shredding her sketchbook. They do this despite the fact that their "everyday Ladybug" is currently working on several projects for them. Suffice to say, this bites them in the backside when it turns out that all of the notes and details of said projects are in the sketchbook they just destroyed... and after what they just did, she's not interested in redoing any of the work, simply canceling everything.
• Tidal waves:
  • Despite Ladybug making it to the statue unveiling, Chat Noir still lies to Theo, bragging about his supposed romantic relationship with his partner. Ladybug promptly catches the black butterfly before it can akumatize Theo, and Chat gets Death Glared by the crowd of witnesses and called out by Ladybug later.
  • Played for Laughs when Alix gives her pocketwatch to Alya to hold onto, only for Alya to promptly pass it to Marinette, reasoning out loud that it'll be safer with someone with actual pockets. Alix promptly Face Palms, clearly wondering why she hadn't thought of that herself, while Kim claims that even he isn't dumb enough to overlook a detail like that.
  • "Coptastic" has Officer Roger point out that Mayor Andre can't simply ignore the law or fire him on the spot for refusing to break it. If he wants to fire him, he'll have to go through the proper legal channels and talk to his superior first. Andre is clearly so used to others folding under his threats that he has no idea what to do when Roger calmly calls his bluff.
  • Chat Noir Cataclysms a few of Gabriel Agreste's ads. This gets caught on camera, resulting in him garnering some bad publicity, especially when Gabriel finds out and starts calling for his arrest.
  • Chat Noir's attempt to vent to Marinette about Ladybug 'skipping out on their date' falls flat when she asks him what Ladybug actually said. When he admits that Ladybug had told him she already had other plans, she spritzes him with a water bottle and scolds him for ignoring what his partner had said simply because it wasn't what he wanted to hear.
  • Chloé raising a false fire alarm gets her into serious trouble when it's revealed that the fire department is able to trace calls, meaning they determine she was the one responsible with ease.
  • Adrien's attempt to guilt-trip Marinette into feeling bad for celebrating Chloé's departure runs headlong into this when she bluntly points out that Chloé had spent the last several years bullying everyone around her.
    Marinette: Also, you can still get in touch with her just fine, although I'm still confused why you said that to me instead of complaining to others or stopping Chloé herself from leaving, seeing as I literally didn't even enter the party and remained Chloé's main victim until literally yesterday.
  • Hawkmoth's decision to leave the lair while enacting his grand scheme on Heroes Day puts him out in the open and renders him vunerable to counterattack. Master Fu takes advantage of this, using several of the Miraculouses to launch a sneak attack; this results in Hawkmoth's arrest and the Butterfly and Peacock being recovered.
• Truth is Subjective opens with Alya waving Ladybug down after a late-night akuma attack, having snagged Lila from her room with the hopes of staging an exclusive interview with the superheroine and her "bestie". While reaming her out on her Skewed Priorities, Ladybug points out that it's the middle of the night — do either of their parents even know she and Lila are out there?
  • On top of this, Alya was livestreaming the whole encounter, having started the stream before getting Ladybug's attention. She hadn't considered that Ladybug might not be happy with her, or that she might say things that would completely destroy her reputation — like accusing her of enabling her stalker.
• Two Letters:
  • While investigating the new Ladybug, Alya decides to show up to an akuma battle while disguised as Chat Noir, hoping to throw Ladybug off balance by pretending to be her partner. Rather than working the way she hoped, Ladybug... treats her like Chat Noir, expecting her to hold her own against Music Band-It despite not actually having any Miraculous powers or protection. Alya ends up screaming for help, and Ladybug leaps in to shield her from an attack. After the battle, the heroine is left limping as she makes an impassioned plea to the public to not get involved with akuma attacks 'just for clips on social media', while reminding them that her Secret Identity is considered a matter of national security, turning all of Paris against Alya.
  • Felix struck a deal with Hawkmoth, helping him get his hands on the Miracle Box. Not only did he ignore the threat of Ladybug and Chat Noir tracking him down, he completely failed to consider the possibility that they'd get anyone else involved in their search. Namely Interpol.
  • Alix/Bunnyx didn't agree with Marinette's decision to retire, or with her choice of successor. Instead of approaching her directly with their concerns, they launch an elaborate, needlessly complicated plan that boils down to trying to intimidate, manipulate and guilt-trip her into returning to service... all of which only solidifies Marinette's resolve to never reclaim the Earrings or become a hero again.
• Villain Of Your Own Story:
  • Alya dismisses Marinette's concerns about using the reality-warping Wish by declaring she'll keep it simple enough that it can't be screwed up. She then Wishes to know Hawk Moth's Secret Identity, creating a new reality where she was Hawk Moth all along.
  • Alya also throws in an extra Wish that Marinette will be happy in the new reality, without considering that her idea of what will make Marinette happy might not match what the Wish goes with. Suffice to say, she's surprised to find her bestie in a relationship with Luka and Nino, rather than dating Adrien like she expected.
  • Her AU self's Evil Plan is to be a 'fake' supervillain, luring out Miraculous heroes with the intent of stealing their Transformation Trinkets so she can become a hero with a more direct power than Nooroo's Super-Empowering. She fails to recognize that she's the only one who sees Hawk Moth's actions as justified; nor does she consider the most likely outcome of her stealing a Miraculous and then using it to 'replace' a known superhero.
• The Wavering Peahen:
  • Hawkmoth decides to test whether the Peacock Miraculous is truly fixed by giving it to Lila, fully expecting to learn if she has any health issues from using it and then retrieve it with ease. He didn't count on how stubborn and pigheaded Lila was - enough that she would hide said issues in order to keep the Miraculous.
    • He also fails to consider how utterly incompetent and arrogant she is as the Peacock holder: as Volpina, her skills were empowered from being Akumatized, but as Pavona she doesn't get that, on top of believing herself to be much better than she actually is. As a result, she not only creates terrible sentimonsters out of a lack of imagination, she keeps trying to get into a physical fight with the heroes in spite of them being much more skilled than her. Hawkmoth ends up having to risk getting captured to rescue her before the heroes can take the Miraculous. It takes Hawkmoth threatening to take the Miraculous back for Lila to stop trying to get directly involved in the fight.
  • Lila starts to feel sick from using the Peacock Miraculous. She attributes it to a simple cold or some bug, not realizing how her health issues only get better when she doesn't use the Miraculous.
    • She decides to design her Pavona costume to be Impossibly Cool Clothes in an effort to upstage Ladybug. What she doesn't realize is that it is Cool, but Inefficient: it is too heavy to actually fight with it, and its long train makes it all the easier for the heroes to trip her or throw her away.
    • She also decides to use the Miraculous to create Sentimonsters resembling the many celebrities she claims to have met, all so she can brag about it to her classmates. Using it multiple times in a row in just a few hours drains her so much that she ends up collapsing in front of her classmates - including Marinette, who ends up finding the Peacock and retrieving it.
• Weight Off Your Shoulder:
  • After Shadow Moth is apprehended, the new Ladybug decides to announce that Marinette secretly supported her throughout the long campaign, wanting to ensure that she gets some recognition for how hard she worked without blowing her cover as the original Ladybug. Later, she freely admits that she didn't consider how this would affect Marinette's ability to live a normal life.
  • Future!Alix/Bunnyx decided that the best way to keep the timeline on track and prevent Marinette's premature retirement would be to pay her a visit and tell her to Quit Your Whining, insisting that things would get better eventually without a single scrap of evidence as to how or showing any sympathy for her plight. While she certainly didn't intend to accidentally reveal that Shadow Moth would eventually steal the Miracle Box and become Monarch, the utter Lack of Empathy she shows when Marinette and the Kwamis naturally react to that news with horror doesn't do her any favors, either. Yet she's still shocked — shocked! — when Marinette strips the Rabbit Miraculous away from her.
  • Chloé hopes to extend her Karma Houdini Warranty by Playing the Victim Card, convincing the jury that she was manipulated and used by Hawk/Shadow Moth. She's so confident about this working that she openly brags about her intentions, not considering how that might undermine her claims... just like how she doesn't consider that directly working with Shadow Moth's legal team might work against her.
• What Goes Around Comes Around:
  • After learning Ladybug's Secret Identity, Gabriel decides to attack the Dupain-Cheng bakery in person just so he can rub his 'impending victory' in her face. This gives Marinette the chance to take down Shadow Moth once and for all.
  • He also attempts to akumatize her... sending his Akuma butterfly straight at Ladybug, whom he knows can purify his butterflies. Naturally, she immediately catches and cleanses it.
  • Chloé confronts Marinette and her parents and demands that she turn over the Miracle Box, honestly believing that she can force her with threats of having her father shut down their business. She thinks nothing of doing this in public, not expecting there to be any consequences for openly threatening the girl that everybody knows just saved Paris from a terrorist.
  • Adrien impulsively decides to trust his mother with the Black Cat Ring over Plagg's objections, effectively handing over the power of Destruction to a villain.
  • Adrien subsequently tries to convince his classmates that his father should be forgiven for everything he did as Hawk Moth, ignoring how many of them were akumatized and/or saw their loved ones akumatized by him. He then tries claiming that he 'stood by' and supported Marinette against Lila, when all he actually did was stand by and watch Lila manipulate everyone... without considering the fact that he's revealing this right in front of his whole class, who were all personally scammed by Lila.
• The Wolves in the Woods:
  • Lila follows through on her promise to turn Marinette's friends against her by convincing them that she's a Bitch in Sheep's Clothing. In fact, this goes so well that Marinette is driven entirely out of Francoise Dupont, forced to transfer to another school. However, this leaves Lila surrounded by classmates who expect her to become their new 'everyday Ladybug', using the celebrity connections she lied about having to make all their dreams come true. What's worse, several have been emboldened to the point that they openly brag about what they did to Marinette, threatening to do the same to anyone who crosses them... which, Lila realizes, could easily mean her.
  • Caline Bustier leads most of her class to march on the Dupain-Cheng bakery with the intention of confronting her former student and guilt-tripping her into talking to the school board. Ms. Diamandis has to point out to her that she's effectively created an angry mob of people who were already banned from the premises, and that she's courting a potential lawsuit from her parents.
  • Adrien lies under oath, not considering how others might reveal the truth about what was happening at Francoise Dupont. He also fails to consider the possibility of his father learning about everything that happens during the trial, and pales when Gabriel informs him that Nathalie attended and ensured he heard every word his son said.
  • Alya decides that the best way to force Marinette to return to Francoise Dupont is by maliciously slandering all of her new friends at St. Catherine's. Nino has to spell out to her that even if she managed to ruin their reputations, that in no way guarantees that Marinette would come back... and would, in fact, likely ensure she avoids those responsible.
  • It's eventually revealed that Alya knew Lila wasn't telling the truth, but thought she could 'knock Marinette down a few pegs' by encouraging the rest of the class to turn on her. This cost them everything: Marinette transferred away, she's hit with several criminal charges, has to shut down her blog, and loses the rest of her friends once they realize what a horrible influence she was.
• Your Wish is my Command:
  • Hawkmoth failed to consider that Lila might be using him just as much as he was using her, or that she might opt to keep the Miraculi for herself if she beat Ladybug and Chat Noir.
  • When she Wishes to trade places with Adrien, Lila doesn't stop to consider the implications. Like how she'd have to deal with his packed schedule herself, or that her mother might wind up missing like his was... or that Gabriel might treat her differently, keeping an even tighter leash on her than he did with his original son.
  • She convinces Gabriel to invite the Graham de Vanille family over without thinking about the fact that Felix and Adrien might have told their parents what she did, or that they might, in turn, tell her father.
• In this oneshot, Lila attempts to claim credit for the beautiful dress Alya's parents commissioned for her by claiming she pointed them towards a trendy Italian designer. She declares this right in front of Alya's parents, infuriating them with the bold-faced lie and leading them to angrily end the party and call their daughter out on her mistreatment of Marinette, who actually made the dress.
• Played With in this collaborative story. Adrien justifies his refusal to help Marinette expose Lila as a Bitch in Sheep's Clothing by insisting he doesn't want anyone to be hurt by said exposure... while seemingly ignorant of how much letting her continue to deceive everyone is hurting Marinette and the rest of the class. However, it becomes clear this is more Selective Obliviousness on his part than simply not thinking things through — when Felix manuevers him into a position where he has to publicly vouch for one of the girls, Adrien's panicked reaction shows that the only person whose wellbeing he truly cares about in the whole scenario is himself.
  • As part of his efforts to save himself, Adrien attempts to blame Marinette and paint her as a bully. While he claims that he didn't intend to hurt her, Felix accuses him of pretending that he didn't realize how he was throwing her under the bus, and that he was actually attempting to punish her for standing up for herself and not doing what he wanted. Adrien's reaction implies Felix nailed his intentions.
• Played for Drama in this unnamed collaborative work. Lila reveals Hawkmoth's Secret Identity and motives to the rest of the class, convincing them that Adrien would be happy if they helped his father revive Emilie with the Wish. To accomplish this, they betray the heroes, ripping the Ladybug Earrings right off of Marinette's ears. Gabriel promptly sacrifices Marinette in order to bring Emilie back. In one of the outcomes, Adrien rips into Nino, relentlessly listing out all the things they failed to consider:
  Adrien: You're no better than he is. Making decisions for me. Assuming what's best for me. Making decisions about me without even talking to me. And now look what you've done!
  Nino: We didn't know there was a price! We just knew it could bring your mom back! That's all we wanted to do!
  Adrien: (shaking his head, disgusted) Did you really think we were just sitting on that much power? If we really had power over life and death itself, why do you think we didn't use it to just Wish Hawkmoth away? Or wish my mother back ourselves?
  Nino: Lila said—
  Adrien: Lila says a lot of things! ANY of it you lot could have figured out! You SHOULD have figured it out! The INSTANT she started propping up a TERRORIST as a figure of sympathy, that should have set off some alarms! And instead, you chose to help said terrorist over the people protecting you — over your OWN FRIENDS! There is no excuse for what you did! You said we were selfish for not using that power. But we could have told you what would happen! All you had to do at any point was listen. Or even just talk to us. But you didn't. And I have to wonder if that isn't because you knew from the start that we wouldn't approve?
  (Nino looks away, ashamed.)
  Adrien: You were idiots. And now you're murderers.
  [...]
  Nino: We didn't know!
  Adrien: You didn't try to know! You just assumed! You assumed you were right. You assumed what would make me happy. And you assumed that you knew better than the two people who have been dealing with this all along and actually knew what the fuck they were doing!
  Nino: He was your father!
  Adrien: He was a terrorist with a known MO of manipulating people based on their feelings! What the hell made you think this was any different?!
  [...]
  Nino: None of us wanted this!
  Adrien: Yes, you did! You said as much when you stole my ring from me and Marinette's earrings from her! You ignored us when we tried to warn you! You spoke to us like we were stupid! You called us selfish for not using the powers the way you wanted them to be used when you didn't understand how they even worked! And worst of all? While Marintte was DYING, you had the gall to act like what you did — attacking us — BETRAYING US was just a game!
  Nino: W-we didn't—
  Adrien: You separated me from her! You attacked her from behind! And then you laughed and joked like we were just going to forget that once you won? What did you think was going to happen? How did you think we were going to react? Even if Marinette hadn't been the one to die, what made you think we were still going to be friends after this? What the hell made you think that neither of us would hate you for what you'd done? Did you really think that Hawkmoth was just going to let us walk away after all this? (turns his back on him) You really are a fool.

Monster Rancher

Monster Rancher

• Phoenix's Tear: Reignition:
  • While trying to expose a disguised Hare to the others, Tiger impulsively attacks him, trusting that Hare will counter him the same way he always does, letting him use that as evidence for his accusations. Instead, his target reacts much more defensively than he's expecting; as a result, Tiger accidentally bites down on his arm, upsetting the others further.
  • Played for Laughs when Hare shows off how he can weave more complex illusions around himself formed from magical fire. The process leaves him Wreathed in Flames; however, he severely underestimates how it looks from the outside... namely, that he just self-immolated right in front of his friends.

Mortal Kombat

Mortal Kombat

• In with the Old, Out with the New has Kano rape Cassie after she wins a fight for her freedom. Unfortunately for him, Sonya goes apeshit on him in their final battle.

My Hero Academia

My Hero Academia

• In Alliance of Amazons and Izuku, a villain plans to use his Quirk (which multiplies any positive feelings any female will have for him by a factor of ten) to create a harem comprised of a group of superheroines that he recently captured. Before doing so, however, he tells them about the kinds of (NSFW) things he will do to them once they're under his control. They're so disgusted with what he planned to do to them that they prove themselves immune to his quirk, as they now have absolutely no positive feelings for the guy. The police bust into his home and arrest him shortly afterwards.
• Belonging: Momo creates skates for the fifty-meter dash in the Quirk Assessment Test, only to remember too late that she's racing on a dirt track and her skates have plastic wheels. She ends up doing worse than if she had just run because of the skates slowing her down.
• Cain: Thanks to his utter Lack of Empathy and inability to grasp that the world doesn't revolve around him, Katsuki's various schemes to sabotage Izuku's apprenticeship under All Might repeatedly blow up in his face.
  • When he steals one of Izuku's hero notebooks, he expects Toshinori to accept its contents as proof that 'Deku' is a creepy stalker. He completely fails to consider that the book has clearly been torched — or rather, exploded, and is caught off guard when Toshinori questions its condition.
  • After being banned from their training sessions, he tries to convince Inko that Izuku is being sexually abused by Toshinori. Somehow, he doesn't consider that Toshinori might learn about this, much less that Inko might confront Toshinori directly. Or that this would further cement his idol's mounting disdain for him.
• Do What You Will, If That's What You Want: Second Interlude reveals that U.A. secretly laced their campus with landmines that will only activate if they detect motion while the cameras aren't picking up anybody. A special measure set up to deal with a supervillain attempting to infiltrate the school while invisible... that fails to take into account the fact that they have an invisible student.
• Failure to Explode:
  • Katsuki was so confident that he'd get into U.A.'s Hero Course that he didn't bother signing up for any other courses as a backup... or any other schools, for that matter. As a result, when he doesn't get in, he's forced to fall back on attending Aldera High.
  • Noriko points out the obvious flaws in Aldera Middle School's intention to profit off Katsuki's success. Even if he'd managed to become successful despite the toxic behavior they enabled, turning out one 'successful alumni' wouldn't help raise their profile. It takes a history of such students.
    • Mitsuki also scoffs at the suggestion that her son would credit anyone else for playing a part in HIS successes. Especially since Aldera fed his ego by letting him get away with breaking rules and hurting others.
  • During the USJ Attack, Aizawa attempts to attack the Nomu head-on, getting seriously injured. Midnight berates him for this, saying he should have recognized that he's not skilled at direct conflict and should have prioritized getting the students out of danger. He begrudgingly concedes the point.
• In Forgiveness is the Attribute of the Strong, Hisashi decides to expose Bakugou's history as a Barbaric Bully during the Sports Festival, assuming it would force Katsuki to pay for his crimes. However, this turns out to have many consequences he hadn't considered:
  • Firstly, exposing Katsuki means exposing Izuku's past as well, dragging it into the national news. Izuku ends up having to lie about how much his long-time tormentor has grown in order to salvage his reputation.
  • This also ensures that U.A. can't visibly punish Katsuki for his crimes in order to sell the idea that he's already changed.
  • Half the school is convinced that Izuku arranged the broadcast in order to get revenge. Even their classroom is torn up by the debates, straining several of his friendships as they debate about the morality of what he'd supposedly done.
• Haigha:
  • Discussed after the Sports Festival, when Nedzu asks Katsuki what he was thinking when he attacked Shinsou after their match. Katsuki initially insists that he wasn't thinking, acting entirely upon impulse; however, Nedzu continues to press until Katsuki starts to realize just how screwed up his own logic is, starting to question why Aldera let him get away with such behavior in the past. This is, naturally, exactly what Nedzu was looking for.
  • Played for Laughs with Shinsou's eventual realization of how stupid it was for him to declare war on Class 1-A, given his lack of physical training meaning that the majority could have easily beat him without using their Quirks. Fortunately for him, they prove to be quite forgiving... aside from cracking jokes about his noodley arms.
  • Izuku berates Tenya for going after Stain, pointing out that he's dealing with a professional Serial Killer who's already bested multiple Pro Heroes. Tenya, by contrast, is a first year student running on anger and adrenaline, which simply aren't enough to deal with Stain.
• Heroes Never Die: Jirou learns about Izuku's original Quirk and decides to "ease him into the idea" of her knowing by passing him on the subway and joking that he should "try not to die on the way home." She realizes her mistake when his heartrate skyrockets and he activates One For All, but it's not until Izuku finally corners her over a week later that Jirou learns how serious the situation is for him.
  Izuku: I need to talk to you. Is anyone nearby? I'm sure you know, but this is a sensitive topic.
  Jirou: Sorry, Midoriya. I'm flattered, but you're really not my type.
  (Izuku activates One For All and smashes the wall next to her head)
  Izuku: Don't. Do not fuck with me on this, Jirou.
• Played for Drama in A Little Knowledge Is A Dangerous Thing. All Might decides that since it's their final exam, he should go all out against Izuku and Katsuki, without considering the fact that they're still first-year students. This results in him accidentally snapping Izuku's spine, leaving his successor permanently paralyzed.
• MHA Alternate Universe: Embers'': Aizawa's plans to have Izuku convicted via using Hitoshi to brainwash Izuku and alongside Nezu, prevent Izuku from getting a case backfires because in more ways. The plan would've hinged on All Might going along with it (which he obviously didn't) and no one rising up to defend Izuku. This culminates in a slew of disasters for all who wronged Izuku.
  • Aizawa's actions as well as the permanent crippling of Izuku (before Eri healed him) costs him his teaching and hero career and gets him a life sentence in Tartarus after trying to attack the HPSC President.
  • Hitoshi is blacklisted from heroics for his part in the False Confession, with the latter complaining about how unfair it is, only for his parents to shut it down and tell him that he proved all who called him a villain right. Of course, two weeks after moving to Thailand, Spinner decapitates him.
  • When Bakugou makes an angry remark that Izuku should've committed suicide like he told him, it would've been wiser to keep his mouth shut. This costs him his hero career and gets him a lifetime sentence in Tartarus after losing his hands and getting a lobotomy from Inko.
  • When Sir Nighteye tries to take back Eri to Overhaul and force Izuku to give up One for All to Mirio, it didn't occur to him that if this was done in a public, the public would be on Izuku's side due to his past as well as the fact he was ordering him to intentionally break the law. This ends with his hero license stripped and him being shipped to Tartarus on a life sentence under the basis he was working with Overhaul.
  • Kirishima's attempts to call Izuku out fail horribly as Kirishima was defending Bakugou, the same person who got a life sentence for all the crimes he committed against Izuku. This destroys Fatgum's reputation, as well as gets him expelled and blacklisted.
  • When Nezu explains his reasoning behind why he allowed what happened to Izuku, the judge and jury are so disgusted with the rat's inability to understand that this type of action is not only illegal, but flat-out moronic, results in UA being closed down and Nezu being sent to Tartarus on a life sentence as well.
• In The One Week Law, the Japanese government decides to pass a law that legalizes rape, not knowing how much of an abysmal idiotic law that would be. This results in a week of unchecked rapes, vigilantisms and a UN investigation that results in the UN occupying Japan following revelations that the HPSC was influencing laws all over Japan, the inhumane treatment of prisoners in Tartarus, statistical manipulations hiding that Japan's total population of Quirkless people was actually .2%, and that was the tip of the iceberg.
• Quantity of Quirks:
  • It's Always Bunny in Mustafu: Rumi Usagiyama points out two flaws in All Might's training program for Izuku. First, the stockpiling nature of One For All means Izuku will be stronger than All Might from the start and thus will have to be in even better shape. Second, All Might's training is intended to make Izuku strong enough to use One For All, not teach him how to use it. Thankfully, Rumi's happy to help, modifying Izuku's training to both make him stronger and teach him how to fight.
  • Critical Overcharge: Setsuna attempts a Distracted by the Sexy moment on Izuku while the group is playing pool. While it works on him, it also distracts everyone else, causing all of them to miss their shots.
• The Scorpion Jar: During their fateful encounter, All Might tells Izuku that he can still help others by becoming a doctor or a police officer. He does so unaware that many of those careers now require a Quirk — at least in Japan — meaning that all All Might had done was set Izuku up for more dead-ends if he pursued these paths. In chapter 2, he finds out how ill-advised his advice was when looking through the hiring positions of the police and emergency services, and only found one that'll take Quirkless people, which the Quirkless use to then find jobs in other areas where the QPA is actually enforced.
• In Think Before You Speak, Izuku dodged Katsuki's attempt to blow him up during their first training exercise together... but Tenya is hit instead. This leads to multiple examples:
  • First, Aizawa not only tells Tensei what happened, but gives a deliberately skewed version of events wherein he pins all the blame on Izuku. Whatever his reasoning for doing so, he fails to consider that he also signed off on the official, truthful account of events, providing written evidence of his awareness of what actually happened.
  • Tensei then complains to the media, declaring that his brother was injured due to 'a classmate being careless with his Super-Strength Quirk'. While we only see a portion of Tensei's complaints to the media, later scenes reveal he goes as far as identifying Izuku by name. By Saying Too Much, he puts Izuku on the radar not just for any Paparazzi who will happily ruin a kid's future for the sake of a story, but for any supervillains who might be looking for vulnerable targets.
  • Tensei also reveals that his family is capable of regenerating their engines, even as he complains about how the recovery process will prevent his brother from being able to participate in U.A.'s Sports Festival. This makes him look less sympathetic and like he has Skewed Priorities.
  • His comments draw a lot of flack towards both Tensei and Iidaten as a whole for being unprofessional, along with upsetting a number of his peers... and provide the Hero Commission an excuse to pry into U.A. by questioning Aizawa's conduct as a teacher. Particularly since, as noted above, Aizawa signed off on the official account of what happened, indicating that he knew the truth and can't claim to have been 'confused'.
  • During "Erased From the Story", the HPSC President tells Aizawa outright that she doesn't understand how he could have possibly believed his plan would work in the first place. While Ingenium was a fairly popular hero, he was still clearly emotionally compromised and biased... and more importantly, U.A. and/or the Hero Commission could easily counter his claims by releasing their own statements about what really happened. Aizawa had absolutely no way of preventing the truth from being revealed to the public, so his actions only succeeded in screwing him and Tensei over.
• With Confidence:
  • The staff at Aldera propped Katsuki up as the Big Jerk on Campus, even tampering with the grades of other students in order to make him look better by comparison along with turning a blind eye to his Barbaric Bullying. Izuku points out one of the glaring flaws in their plan by pointedly asking the Principal which middle school All Might attended.
  • In addition, Izuku notes that all they accomplished with their blatant favoritism was making Katsuki extremely self-absorbed. Not only is it highly unlikely the egotistical Spoiled Brat would EVER acknowledge anyone else having a hand in HIS success, they're assuming that any of the teachers and staff who were complicit with boosting him up would still be around or able to benefit from his endorsement, as their crimes can easily be exposed.
  • Despite watching Izuku blackmail their teacher with a recording of him breaking student-teacher confidentiality, Katsuki doesn't realize how easily he could fall victim to the same tactic until Izuku records him suicide baiting him.
  • Hada Shiro posts incredibly nasty, Quirkist opinions online without ever considering how poorly these comments might reflect back upon him. This becomes a double example when Izuku sends evidence of Shiro's online activity to all the Pro Hero schools; as Principal Nezu explains when confronting Izuku afterwards, he'd also sabotaged Shiro's chances of getting into a normal high school, completely cutting off his academic future. If Nezu hadn't pulled some strings to get him into a school that specializes in tough cases, Izuku might have inadvertantly created his own villain.
  • When Toshinori proposes that Izuku should clean up Dagobah Beach as part of his training, Izuku immediately asks about protective gear, pointing out all the sharp, rusty metal, a nearby biohazard bag, and that used needles and other hazards are hidden under the sand. He also notes that it's an ideal location for hiding bodies, and Toshinori agrees to talk to his police contacts and get some protective gear before they begin.
  • Toshinori also realizes that he has no experience as a teacher. After discussing the matter with Nezu, they decide to make him a teacher's aid instead, so he can provide assistance without being solely responsible for the class.
• In Young Midoriya, Sero starts off his match against Itsuka by binding her hands in his tape. Only once he tries to reel her in does he remember her Super-Strength, just in time for her to throw him out of bounds using his own tape.

My Little Pony: Friendship is Magic

My Little Pony: Friendship Is Magic

• The Demesne Of The Reluctant Twilight Sparkle: Twilight has to get a lot of gold from the Ponyville train depot to her new royal bank across town, preferably in secret to avoid looters, and doing it by cartload takes uncomfortably long. Her solution? Telekinetically use the gold bars to construct extra tracks to the bank and levitate the train along them, picking them back up as they go. Sensible enough except that it goes through the middle of town, so secrecy is right out.
• A Diplomatic Visit: Subverted in the seventh chapter of the fourth story, The Diplomat's Life, when Twilight plans to free the Pillars of Equestria — she knows full well that the Pony of Shadows will return with them and plans ahead, preparing a spell to trap him again. It doesn't work, but that's because she underestimated his power compared to their group's.
• Discord's New Business: The Crusaders realize quickly that their plan to spend the day in Manehattan as adults has some holes in it. (Mainly, the city's so big that they won't have time to go all the places they want and get back in time to see the stage show they were planning on seeing.)
• In the one-shot How to Kidnap a Princess, Rainbow Dash and Pinkie Pie want to show Twilight just how lax her castle's security is by kidnapping her. Apparently it never crossed their minds that despite their good intentions, kidnapping a Princess is considered high treason and that both Princess Celestia and Princess Luna would elect to hunt them down personally with a full regiment of the Royal Guard in tow.
• One of the antagonists of The Nuptialverse story Families is an Immortality Seeker who riled up a huge anti-Princess group and took Twilight Sparkle and Rainbow Dash, among others, hostage in order to force Princess Celestia to divulge the secret of her and Luna's immortality. Celestia's response is to laugh in his face and point out all the holes in his plans, such as having no way to avoid royal retribution after everything was done, almost certainly not having Power Limiters strong enough to hold Twilight, and (accurately) stating Rainbow is useless as a hostage because she would never want Celestia to risk all of Equestria for her sake alone.
• RainbowDoubleDash's Lunaverse: The events of "Helping... Hands?" start because Trixie decides to test an unknown spell from a culture she doesn't understand, using a type of magic she's never used before on a friend of hers a few hours before said friend has an important concert. Naturally, it all goes wrong, and the friend's girlfriend calls Trixie on it.
• Vengeance of Dawn: Breaking Dawn, a disgruntled former student of Princess Celestia who blames Twilight for taking her place, plots an elaborate scheme to disgrace her rival and get back in her teacher's good graces that turns out to involve poisoning Princess Cadence (with a substance that has no known cure), brainwashing Shining Armor, and plotting with foreign zebra soldiers to stage a coup in Canterlot so she can defeat them later and look like a hero, figuring out that Celestia will be impressed by her ingenuity and magical power, and apparently not disgusted or horrified at what has been done to her personal student, niece, captain of her royal guard, and the ponies of her city. Case in point, when she defeats and disables Twilight, followed by revealing herself to Celestia, the Princess's first reaction is to attack and restrain her, before revealing that she is disgusted by what Breaking Dawn did.

Naruto

Naruto

• Neji in The Darkest Light realizes this after he tries to have Hinata "manhandled" by hiring Naruto/Naruichi to give her a message. Not only does Naruichi have an acceptable explanation for what Hiashi walks in on, he also has the receipt saying he was hired by Neji.
• Androgyninja's A Dose of Venom: Ishino Yamanaka is determined to figure out just how Sakura managed to break free of Ino's Mind-Body hijacking during the Chuunin Exams. So he forces his way into her head in an illegal Mind-Walk. Somehow, it never occurred to him that Sakura might figure out a way to escape his technique as well — when she stabs him with a senbon in the real world to break free, he's left gaping at her like a fish.
• Konohamaru learns the flaw in his plan to defeat his grandfather and become Hokage in A Drop of Poison when Naruto asks him what's to stop someone else from defeating him and becoming Hokage immediately afterward?
• First Try Series has Sasuke realizes this during his confrontation with Itachi during the Search for Tsunade arc. Namely, Sasuke notes that Itachi used to be in ANBU before becoming a criminal on the run and he's been a Genin for a little over six months. Right before he gets hit with a Tsukuyomi he says the trope name verbatim.
• The Last Prayer: Naruto's future self spends a fair amount of time instructing his past self on various techniques. It's only after the younger Naruto learns the Rasengan that they both consider the fact said technique isn't written down anywhere and only two people in the world know how to use it, one of whom the younger Naruto has never met and the other is his teacher. As a result, Naruto has a very powerful A Rank technique that he can't be seen using.
• In The Promise, Hinata tries to break up Naruto and Hanabi by introducing legislation that requires Naruto have children by multiple women (so his descendants can defeat Kaguya if she ever returns) in order for him to become Hokage. She believes that either they'll agree, causing Hanabi to resent Naruto and break up with him or they won't agree, causing Naruto to resent Hanabi for destroying his dream and they'll break up. She never once considers that Hanabi would be willing to share or that Naruto would love Hanabi enough to happily give up his dream for her, as evidenced by her shock when Naruto tells her to "go to Hell".
• Space to Breathe: When Riku hires some Konohan shinobi to escort him during a diplomatic mission, one of his servants decides to try exploiting their presence by lying to Sakura, claiming that his master has personally requested that the ninjas help carry his litter. Somehow, said servant didn't consider that she might simply talk to the Mountain Daimyo herself, letting him know that his "personal request" has been denied. Riku promptly fires the servant, with Sakura musing that they'll need to be on guard; given the lack of forethought he's already shown, she wouldn't put it past the now ex-servant to try getting revenge.
• Lampshaded in A Teacher's Glory when Orochimaru wonders after the fact why exactly he ordered a team of Sound genin to kill Sasuke. Even if they succeed, they might damage Sasuke's eyes.
• True Potential: By his own admission, Danzō did not consider the possibility of Orochimaru having an interest in Kabuto when sending the Sannin to either kill him or to make sure that he's dead.
• What You Knead:
  • In order to keep the costs down, Tazuna dramatically undersells the severity of his village's situation, deliberately omitting several vital details like how Gato has hired his own ninja to oppress them. As a result, the mission is given to the inexperienced Team Seven, and Kakashi is furious upon learning about the deception.
  • Tazuna also antagonizes and insults his own bodyguards, refusing to acknowledge it's his own fault he was stuck with a bunch of genin kids. This fails to endear him to anyone, making Kakashi all the more inclined to simply abandon him once the truth comes out.
  • Played for Laughs when Kakashi nominates his team to potentially enter the summer Chuunin Exams, a decision he justifies to Iruka and Gai by declaring that he wants to treat his genin like adults and give them the opportunity to decide whether or not to attend. He later laments this to Iruka after they opt in, realizing too late that he wasn't actually ready to deal with the stress of letting them participate.
  • Similarly Played for Laughs when Jiraiya finally decides that he's ready to meet Naruto. Kakashi notes that while Minato may forgive him for how long it took for him to do anything for his godson, taking a 'better late than never' view, Kushina will likely kick his ass once he passes over into the afterlife. Jiraiya pales, admitting outright that he hadn't considered that aspect.
• Your Heart a Haven of Thorns: Kikyō, Sakura's new tiger summon, has made it very clear to Kakashi that she doesn't approve of his poor teaching methods. In an attempt to avoid and appease her, Kakashi temporarily leaves her in charge of Team Seven while he goes to pick up some food. Upon his return, he attempts to pull rank, only for Kikyō to bluntly remind him that he left her in charge... and, in accordance with the Konoha Guide Rules and Regulations of Chains of Command, she refuses to cede control back to him, citing his incompetence as a leader. Kakashi then manages to dig himself even deeper when he attempts to attack her to wrest back control, only to find himself in a Mexican Standoff while a bunshin clone of the tiger berates him for his foolishness... and for demonstrating precisely why she doesn't trust him.

Neon Genesis Evangelion

Neon Genesis Evangelion

• In the Gag Dub Evangelion: ReDeath, Kaji is trying to get to the bottom of what Gendo is up to. It's something to do with the Prince song "1999" being played after the year 1999 to attain ultimate cosmic pimp power, but Kaji needs to know more, so...
  Kaji: I found the original CD of Prince's Greatest Hits, so I gave Gendo the disc he needed so I could discover the truth behind his plans.
  Misato: But you gave him the disc!
  Kaji: Yeah, it was the only way I could get close enough to the truth!
  Misato: But you gave him the disc.
  (Beat)
  Kaji: Aw, crap!
  (cue Third Impact and Ritsuko in her underwear)
• Rise of the Minisukas: General Taihou from the JSSDF thinks he can counteract Nerv's mentally unstable teenagers by hiring his own trio of seriously disturbed teen pilots... until Mana gleefully asks if her next mission will involve murdering someone, and he starts considering that maybe it was a bad idea after all.
  Taihou: Perhaps I shouldn't have trained emotionally unstable teenagers to pilot weapons of mechanized destruction? Eh, too late to worry about that now. Now I need a new psychologist to hopefully decrazy my pilots.

Odd Squad

Odd Squad

• In Full Circle, Oscar agrees to go to '50s Night at Club 24 and decides to make his own outfit for it. It isn't until he goes home, goes into his sewing room, and stares blankly at his supplies that he realizes he has no idea how people dressed in the '50s.
• OSMU: Fanfiction Friction: For her weapon against a large dragon, Orla used a stick, which naturally didn't last long as the dragon snapped it into pieces with a single bite. Oswald then decides to try the same tactic, only with a tree branch and his target being the dragon's eye. He misses, but it notices him and begins charging at him instead of going after an injured Orla.
  Oswald: Ohh...dat did a mistake...

One Piece

One Piece

• In Crossed Lines, Yamato tried to sail off Wano alongside Hiyori by using Ace's vivre card as a guide to lead them to Whitebeard. As neither had any actual sailing experience, they barely managed to survive long enough to run into Shanks by pure chance. While being yelled at by Nami for her fool of a plan, Yamato admits it wasn't her best idea.
• In This Bites!, a dramatic example occurs when Cross finds a way to potentially save Merry by having her eat a Devil Fruit. Namely, he has no idea how to let her eat it. Fortunately, a solution is presented.

One-Punch Man

One-Punch Man

• When fighting Vaccine Woman in One Punch Man: Hero's Harem, Lightning Max kicks her right in her Balloon Belly. As her stomach was so large from eating several monsters mere moments ago, she promptly vomits all over him.

Persona 5

Persona 5

• For Real?: After Ryuji finds Ren and Sadayo making out in an empty classroom, Ren goes and tells him that their relationship is consensual and genuine. While Ryuji does promise to keep quiet, he does tell Ren that there are a few problems, namely that if the two are caught it could affect Ren's probation status, which would affect the rest of the Phantom Thieves. He also points out that either Ann or Shiho, who both faced sexual assault from Kamoshida, wouldn't look too favorably at Sadayo and could assume she's taking advantage of Ren. Though Ryuji does advise Ren to tell the others when he's ready.

Pokémon

Pokémon

• In Common Sense, Seymour is smart enough to figure out that Jessie challenging Ash and co. to a battle was just a diversion and sneaks ahead to save the Moon Stone alone. Unfortunately, he wasn't smart enough to realize that he didn't have a plan to get it back without the help of a Trainer and ends up getting tied up.
  James: Seriously, how were you going to get from Point A: Getting back to this chamber, to Point B: Stopping us?
• Pokémon: The Lost Child: Essentially the whole lesson of Chapter 16. Empoleon goes rushing up to a mountain to take on whoever is up there to prove he can take on The Brotherhood, but has no plan or any idea of what he is doing and ends up beaten very badly as a result.
• In Pokémon: A Marvelous Journey, Amara's entire plan is to go on a Pokémon journey and eventually make the Pokémon League. In chapter 67, when they meet again, Julia points out all the flaws in said plan: Amara is blacklisted as a Trainer, regularly breaks the rules of Pokémon battles, and has outright assaulted people with her Pokémon and stolen several of the badges she needed, so it's unlikely the people running the Pokémon League will even let her in at all. Amara is left stunned, as she legitimately didn't consider any of the above.
• In Water Cycle, Brendan points out that Archie's plan to have Kyogre expand the sea by creating rainclouds isn't going to work because rainclouds come from water that evaporated out of the ocean. The last panel is Archie sobbing and drinking a beer while surrounded by used tissues as Brendan pats him on the shoulder with a "there, there" expression.

Puella Magi Madoka Magica

Puella Magi Madoka Magica

• In MadoHomu Got Married, Homura and Kyubey switch bodies. Kyubey in Homura's body takes the opportunity to try to convince Madoka to make a contract with him now that Homura can't stop him. He finally convinces Madoka and is about to seal the contract, before realizing that he can't finalize the contract while in Homura's body. Homura lampshades this by asking, "Are you an idiot?" before trying to talk Madoka out of the contract. At that point, Madoka notices that both Kyubey and Homura are behaving the opposite of how they usually are and figures out that they swapped bodies.

Punch-Out

Punch-Out!!

• In Ma Fille, it's shown that Glass Joe severely overestimated his skill for his first fight (starting with the Major Circuit rather than the Minor Circuit), resulting in the first of his many, many losses.

Ranma 1/ 2

Ranma ½

• Becoming a Man Among Men: Akane has a bad tendency towards this. In particular, she challenges Kodachi to a clan duel, convincing herself that she'll easily be able to win despite how often Kodachi had beaten her in the past. When Kodachi triumphs, Akane loses the right to ever challenge her again; to do so would dishonor the Soun family name.
• In Ranma: Happenstance Gone Right, Genma, while attempting to force him to apologize to Akane and come back to the dojo, strips Ranma of his status as heir of the Saotome School of Anything Goes and gives it to Ryoga, expecting Ranma to challenge Ryoga for the status at Genma's conditions, lose due to Ryoga being trained specifically to defeat Ranma, and be forced to "show the proper respect to his master." It backfires royally due him not considering a number of things:
  • One of the reasons Genma went for his plan was that Ranma had grown rather close to Ukyo and Shampoo-enough he actually talked Shampoo's grandmother before issuing his challenge. She quickly figured that Genma would train Ryoga to take advantage of Ranma's fighting style and trained him to completely screw them over it, and had the challenge include the condition that if he won he would have the right to challenge his father for his spot in the school.
  • Anticipating that Ranma may win anyway, Genma had brought a cat just in case, and when Ranma gained the upper hand, he threw it at him. By the match's rules, that meant Ryoga was automatically defeated-and then the situation with the cat was neglected long enough it triggered the Neko Ken, and Ranma mauled both Genma and Ryoga.
  • Right after Ranma left, Happosai (A.K.A Genma's own master) shows up and has everyone tell him what happened. A good laughter later, Happosai reminds everyone that Ranma is his heir, so even if Ryoga had won, Ranma would have not owed any respect to Genma. He then bans Genma from taking advantage of Ranma's fear of cats in their challenge to punish him for his stupidity.

Richie Rich

Richie Rich

• Lampshaded in this Occupy Richie Rich post, where Richie demonstrates a button-activated safe-opening system—and the button is not protected at all.
  "Richie m’boy I don’t think you thought this through very well"

The Rising of the Shield Hero

The Rising of the Shield Hero

• Ambition of the Red Princess:
  • The plan the two spies from Siltvelt, Rosat, and Cervell, have for smuggling Naofumi out of the kingdom amounts to riding in a carriage across the border, going through a well-fortified garrison on the way.
  • Aldrecht, the Royal Battle Mage, thinks Queen Mirellia was rather foolish at best to make Malty kill a monster the same day her pet died. Combined with her general stress, Malty lost control of her magic and killed her nanny by accident.
  • Shortly before the story's start, Mirellia almost made Eclair's father her Regent while she was away in Faubley. As the man is already massively unpopular, doing so would have painted a target on his back, something she only realized when her own advisor pointed it out.
  • Ren realizes he didn't properly think things through once he's face to face with Gaelion, who's the size of a small keep. Malty privately notes there's a distinct difference between planning to kill a dragon you merely know of, and planning to kill the inn-sized dragon directly in front of you.
• Hope of the Shield Hero: Malty decides to force Naofumi to show how evil he is by threatening to murder Raphtalia and Filo. Naofumi unlocks the Wrath Shield and Malty gets her wish - as Naofumi nearly kills her with the powers the Wrath Shield give him.
• Iwatani Naofumi - BitchSlayer: After Naofumi pulls a Poisoned Chalice Switcheroo on Malty and confronts her about her plans, the first princess gleefully admits she was going to frame him for rape, which carries the death penalty. What she didn't consider was that Naofumi would decide he had nothing to lose and simply strangle her then and there. It's only a stray idea by Naofumi that saves her life.
• Promotion to Queen: Malty does everything she can to provide for her people, including creating magical structures that are not only stronger than castles, but also provide near unlimited food and water. Her advisor Cromwell lampshades that she's basically destroyed the kingdom's agriculture and housing industries. Every single farmer, carpenter, and stonemason is out of work as a result of Malty's actions.

Rosario+Vampire

Rosario + Vampire

• He Who Fights Monsters: The Headmaster invited Tsukune to his school hoping to teach the youkai how to coexist with humans, but as he barely makes the effort to control the students' behavior (as they are prone to murder each other and universally look down on humans), a human student without allies would have to resort to be worse than the monsters in order to survive.
• Here In My Arms: In order to trigger his transformation into a full-fledged vampire, Tsukune takes off his Holy Lock and jumps into the ocean. The plan works - but he forgot that water is a vampire's Kryptonite Factor. If Kurumu, Mizore, and Yukari hadn't followed him, he would have died.
• Rosario Vampire: Brightest Darkness:
  • Early on in Act III, Rason acquires a Holy Lock from Heaven and uses it to seal Tsukune's ghoul form away; however, it doesn't occur to him that the Holy Lock was never explicitly made with the intent to seal away a ghoul, let alone one that was infused with massive amounts of energy from Kokoa's overcharge, until after it's revealed that the chain is cracking under the strain of Tsukune's full power.
  • In Act III, Gin runs to Dark and convinces him to hide him after stealing Apoch's underwear, apparently forgetting that Dark is a well-known Wife-Basher Basher. As soon as Dark finds out, however, he throws him to Apoch and Astreal.
  • In Act III chapter 16, after the group is stated to be heroes who fought off Fairy Tale, Kokoa and Felucia proceed to brag to the other students that they'll protect the school, whipping the crowd into a big frenzy:
  Kokoa: I didn't think they'd go this crazy.
  Kurumu: More like "didn't think!"
  • In Act III, it's revealed that Kiria planned to harness Tsukune's ghoul as part of his Evil Plan. At the very end of the fic, Tsukune deliberately takes off the Holy Lock and unleashes the ghoul, which promptly pounces on Kiria and tears him into Ludicrous Gibs with his bare hands; obviously, Kiria never once considered the possibility that the ghoul would do just that.
  • Throughout Act IV, Tsukune and co. expect Hokuto to pull off a full-scale attack on Yokai Academy to capture Moka, as per what happened in an Alternate Timeline. However, they fail to consider the fact that Luna and Falla, two Time Masters, were not present in said Alternate Timeline, and are completely unprepared when Hokuto, who did take Luna and Falla's presence into account, goes with a Divide and Conquer tactic instead by holding Tsukune's family hostage.
  • In Act VI chapter 22, to deal the finishing blow to a monster Ceal had grounded, Fang Fang summons a phoenix, forgetting that he's doing so in the middle of his own backyard, the Phoenix is powerful enough to incinerate his entire compound, and there are several people right in the middle of its blast radius. When Ceal points this out, Fang Fang's only response is a sheepish "Oh, right."
  • In Act VI chapter 51, Falla uses her time powers to cheat at Hex's game, forgetting that Hex is a Reality Warper and thus would easily be able to tell. Hex even mockingly asks her if she actually thought he'd fall for it.

RWBY

RWBY

• In Drive, Ironwood tries to call out Ozpin for forcing a first-year team on a dangerous mission to investigate the White Fang. When Ozpin tries to defend himself, pointing out Blake's history with the group serves as valuable knowledge, Ironwood retorts that he still hates the idea of using them as bait, which confuses him. Turns out that he completely forgot that the White Fang hate the Schnee family with a passion, and Team JBRW just happens to have one Weiss Schnee as a member, all but assuring that a simple scouting mission will become a violent affair. Ozpin attempts to play it off as part of his plan, but mentally kicks himself for the oversight and starts running through every backup plan he can think of.
• I Thee Wed: After Jaune and Cardin settle their differences, Cardin admits his team's plan to attack Jaune with Rapier Wasps. The more he talks, the more Cardin realizes how incredibly stupid their plan was. Yes, they have rather painful stingers, but Jaune has aura which regularly stops bullets. Worse, Cardin and his team deliberately planned it (Jaune assumed they came across some within the forest) and brought them on the ride over in a folded cardboard box. After explaining the whole thing, Cardin curses that he's not even a competent bully.
• During his spar with Jaune in The ProfessionArc, Ren tries to wear the more heavily armored huntsman out using hit and run tactics. As he's informed after the spar, armor might be heavy but its weight is distributed across your entire body, so it doesn't hinder that much. Furthermore, Ren was the one running around the whole spar, so even without carrying as much weight, he still ran out of stamina faster.
• White Knight Errant: Yang repeatedly tries to embarrass Jaune but forgets that, due to being the target of lifelong teasing from seven older sisters, his immune to her attempts.
  • Yang makes a joke about braiding Jaune's hair or painting his nails, to which he blithely agrees due to being the only son out of eight children and being the youngest as well.
  • Later, Yang tries to embarrass Jaune by asking him to buy some pads and tampons for her team, only for Jaune to grab a notepad and ask exactly what kind each of the girls wants. While she's awkwardly stammering at his nonplussed reaction to the request, Jaune reminds her that he has seven older sisters.

Sly Cooper

Sly Cooper

• Muggshot in Sly Cooper and Carmelita Fox and the Thievius raccoonus lampshades that his desire to create his very own Vegas-style gambling empire in Mesa City is made exponentially harder considering he and his goons drove out its entire population and responds to intruders with ultra-violence. It gets to the point where he's genuinely worried that he will be too bankrupt to carry any other criminal endeavors and his Mooks will walk out if they don't mutiny first.

Star Wars

Star Wars

• Spoken word for word by Ahsoka in Our New Hope when she basically abducts a young Luke Skywalker on a whim after finding out he's Anakin's son.
• In The Desert Storm series fic Night, Ben Nasade (a time-displaced Obi-Wan Kenobi) attempts to enlist Hondo's help in taking down the warlords ruling over Rattatak. Hondo, being Hondo, asks to be given his own lightsaber as payment. Ben quickly dissuades Hondo by laying out exactly what would happen if he did give Hondo a lightsaber. Since only Jedi are permitted to wield lightsabers, any Jedi who happened upon Hondo would assume that his lightsaber was stolen and that the pirate killed the previous owner.

Steven Universe

Steven Universe

• Ask Her Lustrousness, Yellow Diamond: When Dewey suggests to Bella and Susan to eat a donut, Blue immediately goes through with it—with no clue on what happens next. She gets her rather squicky answer from Amethyst.
• In What Might Have Been, Garnet points out that with the Breaking Point being an extremely short-ranged weapon, Bismuth would have had to get close enough to Pink Diamond to use it, and even then would have to have gotten past her entire entourage, and Pink would have to have stayed still long enough for her to use it.

Sword Art Online

Sword Art Online

• This trope, along with a heap of Exhaustion-Induced Idiocy, is the reason for Akihiko Kayaba's actions in Sword Art Online Abridged — having learned that there was a bug that would accidentally kill players when they died, Kayaba panicked as he was afraid this would affect the game's Metacritic score. In his heavily sleep-deprived state, he decided that claiming the whole thing was All According to Plan was the best solution until he could fix it. When Asuna and Kirito call him out on the Insane Troll Logic, he admits being sleep-deprived doesn't do wonders for your mental state.

Tangled

• In On Trial, King Frederic has been corrupting the justice system in the kingdom for years to see that some criminals (like Cassandra) are punished more harshly than others. He forgot that his wife also runs the government, and has the power to overthrow him and take full control if he proves to be incapable of performing the role of ruler the way he's supposed to.

Teenage Mutant Ninja Turtles

Teenage Mutant Ninja Turtles

• The Ouroboros sees the 2012 turtles, April, and Casey convincing their counterparts from the new timeline they just created that they need to head into space themselves in order to maintain a Stable Time Loop. They lie to them about this in order to replace them, taking over their lives because they believe that's the only way they can get their happy ending. What they failed to take into consideration is that just because their counterparts have gone into space, they don't just cease to exist... and after figuring out how to contact them, start calling home, looking for guidance about how to ensure they close the loop. And eventually, they figure out that they've been deceived and come calling, looking for answers...

Total Drama

Total Drama

• Legacy (Total Drama): Chris and the producers of Total Drama cut costs at every opportunity, including using remote cameras instead of live camera crews. It's a matter of time until tragedy ensues, and once it does they find themselves staring down the legal gun barrel.
• Second Chance at Love: Duncan, during his fight with Leshawna, brags about the sexual demands Gwen's willing to do for him, and admits he only with her for sex. Later, he lies to Gwen, saying that Leshawna attacked him first and that he was trying to protect Alejandro; this goes badly for him, as not just Leshawna told Gwen the truth, but mentioned one of the sexual demands that Duncan talked about, proving to Gwen that Duncan's the one lying. Gwen, now knowing that Duncan was using her, and hadn't quit his bullying, criminal ways, breaks up with him.
• Total Lady Drama Island: When threatening to tell everybody that Cora was actually Cody, Cody tells Anna Maria that she's waited so long to use her blackmail against him that if she actually does then they will also realize she knew for a long time that there was a boy on the island and said nothing. Which will make her just as guilty as he is.

The Tudors

The Tudors

• Queen Anne's Legacy:
  • Charles Brandon, out of anger at how much power the Boleyns are gaining, starts "discreetly" researching the rumors about Anne possibly cuckolding Henry while they were married. It never occurs to him that these rumors may be just rumors and that Anne didn't cheat on Henry (which she didn't), or how angry Henry would be that someone would try to slander his deceased wife and cast doubt on the legitimacy of his oldest son and second oldest daughter. Unsurprisingly, he's caught, deemed a traitor, stripped of his titles, and executed.
  • Edward is effectively the last hope the Catholic faction has of returning England to the flock of Rome, or in the case of others, breaking the power the Boleyns have over the royal court. Many therefore scheme to put him on the throne to make their goals a reality. The problem with their planning, however, is that none of them actually bother to prepare Edward to be a ruler that would actually do these things, either being blocked off by the Tudors (who don't want Ambrose and Edward fighting at all), fighting against the Boleyns, or just plain fighting against each other. By the time anyone gets around to putting serious effort into turning Edward against Ambrose, Edward is a fanatical Protestant who flat-out doesn't know how to rule at all, basically making him the very antithesis of what any of them want in a king.
  • Edward's own rebellion is a massive case of this, because it becomes obvious early on that he's severely misjudged the political situation. He has his uncle Hertford arrange things so he has the support of the Catholic Church in hopes of deterring Joanna's relatives from supporting Ambrose on her behalf, but fails to realize that even the pious Habsburgs are willing to defy the Pope to support their family. He also writes to Elizabeth to ask for her support (and by extension, Denmark and Norway's), but, as Frederick points out, there's no benefit to her to do so; challenging Ambrose's legitimacy and claim to the throne is also challenging her legitimacy as well. Finally, he marries Mary Stuart in hopes of getting the support of France in addition to Scotland's, and fails to have his own intelligence agents double check their intel, which would've revealed that the current regent of France, Catherine de Medici, hates Mary and wouldn't support her in any way, even if France wasn't dealing with their own problems at the moment. All in all, every misstep proves how ill-fit Edward is for the throne, and dooms his rebellion before it can even begin.

Twilight

The Twilight Saga

• Tough Love:
  • Bella impulsively threatens to leave home if her father doesn't let her get her way. Charlie calmly outlines for her just what that would entail, including the fact that she would no longer benefit from his friends turning a blind eye towards her misbehavior and would have to handle her own bills. When she tries to recant, he declares that she's still no longer welcome in his house: she's eighteen years old, after all. And if she wants her independence so badly, she can have it.
  • Bella also took her job at the sports store completely for granted. Even before she ditched work in order to take an impromptu trip to Italy, she was rude to customers, faked how much time she was actually spending working there, and was Stealing from the Till, all while apparently believing none of this would ever catch up to her. Charlie bluntly informs her that Ms. Newton called him while she was gone and let him know she was being let go, as well as all of the reasons why.
  • Generally speaking, Bella never considered the possibility that acting like a Spoiled Brat would ever catch up to her. She appears to have dramatically overestimated her ability to manipulate others by Playing the Victim Card and turning on the waterworks, only to find out that both of her parents have grown sick of her selfish behavior.
  • Charlie also points out that she's incredibly rude towards the Cullens, remarking that he wishes he knew precisely what they had that she wanted so badly. He says this knowing full well that Edward is eavesdropping on their conversation, causing him to realize that Bella is an Immortality Seeker.

The Vision of Escaflowne

The Vision of Escaflowne

• Vision of Escaflowne Abridged: In the finale, Emperor Dornkirk (aka Isaac Newton) reveals he has spent centuries orchestrating an elaborate Gambit Roulette, launching an "evil expansionist empire" to plunge all of Gaea into war, for the sole purpose of orchestrating "An Ideal Future," so he can make a perfect sandwich. However, part of his master plan involved orchestrating his own death, so now he can't eat his sandwich. Lampshaded by Hitomi.
  Dornkirk: All my life I have dreamed of it, and now: I am going to eat it!
  Hitomi: But you can't eat a sandwich, you're dead!
  Dornkirk: Oh-hohoho! Oh, say, that's roight. That's an egg on my face, innit? I really should have thought this through before plunging the entire world into war.

World of Warcraft

World of Warcraft

• Sylvanas Windrunner possesses a comatose noblewoman in Lady and King to infiltrate Stormwind and learn their military secrets. During an attempted assassination against her, a young adventurer takes a blow meant for Sylvanas but is fatally poisoned. Just before he loses consciousness to the seemingly incurable poison, Sylvanas reveals her true identity. When an offhand comment by her causes the lad to be sent to the druids and cured, she realizes how badly she's jeopardized her mission; fortunately, the extensive damage cost the adventurer the last several weeks of his memory.
  • Another noblewoman reveals at a state dinner that the woman Sylvanas is possessing is actually half-elf in an attempt to sway King Wrynn away from her. Sylvanas calmly points out that not only would he obviously already know from his own spies, but that Varian considers a Blood Elf to be one of his best friends, so the noblewoman revealing such only implies she's trying to paint the king as both ignorant and bigoted.

Worm

Worm

• Earning Her Stripes: When Rune gets caught by Blockade, the teenage villain throws away the concrete chunk she was using as a platform and threatens to use it to destroy a house if Blockade doesn't let her go. Blockade promptly informs her that, if that chunk kills someone, she will likely be judged as an adult. Rune promptly attempts to pull the chunk back.
• Security!: Tattletale gets so upset by someone else knowing more than her that she decides to make a cape wiki page for his pseudo alter ego, Security. It's only when Coil calls her looking for information on Security that she realizes listing someone as a powerful Thinker might be a bad idea.
• In Trump Card, the Empire Eighty-Eight kidnap Taylor Hebert to use as bait for the new cape Hax, who's given them some trouble. To ensure that Hax doesn't simply teleport away with their hostage, they surround her with their capes. What they don't know is that Taylor not only is Hax, but her power is to copy the powers of nearby capes...
  • Even not knowing the content of the above spoiler, this was already a terrible idea because it violates the most important of the "unwritten rules" to which even most of the saner villains in the setting pay something more than lip-service, specifically the one about not attacking capes in their civilian identities and especially not targeting their friends and families. Even supervillains have loved ones, and nobody wants to see those loved ones caught up in a Cycle of Revenge, so by crossing that particular Rubicon the Empire have made themselves pariahs even among their fellow neo-Nazis.

Young Justice (2010)

Young Justice (2010)

• Bad Idea alternately plays this for Laughs or Drama depending on the chapter. The story focuses on deconstructing Fandom Specific Plots that pop up in the Young Justice fandom.
  • The first chapter has a group of bullies try to beat up Dick Grayson and one of them is berated by their father for putting his business relationship with Bruce Wayne on the line by assaulting his son.
  • Chapter 15 has the bullying problem handled a different way: Bruce goes out as Batman and threatens the kids harassing Dick. Unfortunately, he ends up exposing Dick's secret identity when the bullies start wondering why Batman would specifically go after them for someone named Dick Grayson.
    • One of them confronts Dick with this information and is reminded that he is attempting to assault one of the few people capable of protecting the city and that anyone he tells will potentially see the bully as an asshole. He is proven right. When Bruce tries justifying his actions later to Alfred and Dick over breaking a rule that he had Dick follow, Alfred asks why he didn't contact the school or the kids' parents about it.
• In Risk It All, Ren's desire to stop Black Mask and dismantle his operations to protect himself, his family, and others is noble, but it's blatantly clear that he doesn't think through everything. He freezes up when he sees a gun again, becomes a Hero with Bad Publicity due to lacking awareness of his surroundings during his fights, and gets mistaken for a Triad, reigniting the Mob War in the process.
• With This Ring:
  • The protagonist succeeds in disrupting Black Adam's control over the 5000-year-old soul of superhero Teth Adom, allowing Adom to gain control of their shared body. Unfortunately, Adom comes from an era without the Justice League's rules of engagement; he tears the next villain's arm off and nearly kills the Joker before the protagonist can remonstrate with him.
    Adom: Why? If you agree he deserves it...
    Paul: Because we, we are not the rightful authorities. This country has laws and honest judges and it is to them we leave these decisions. Would you have accepted people enacting justice in your kingdom, save by your leave?
    Adom: I would not. Very well, I shall stay my hand. At least until I understand this land better.
  • Georgia Sivana remotely activates a "Mister Atom Mark Two" robot in order to use its optical sensors to watch Paul fighting the Huntsman. However, the robot isn't just a camera.
  Beautia: Ah, guys? Do you remember what Dad programmed as the Mark Two's behavioral baselines?
  Mister Atom: I, MISTER ATOM, AM MEANT TO BE THE EARTH'S RULER!
  Beautia: Never mind.

Yu-Gi-Oh!

Yu-Gi-Oh!

• Early in Yu-Gi-Oh! The Abridged Series, Mokuba laments his poor foresight upon realizing that using a Bedsheet Ladder generally only works if the sheet is long enough to reach the ground floor. Fortunately for him, he's a cartoon.

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