The show also deconstructs the Parental Favoritism trope with Olga. It shows the bad effects it can have on children who are favored a lot in their families. Because Olga's parents dot on her too much, they have set a lot of unrealistic expectations for Olga, causing her to become the neurotic perfectionist she is. Olga outright said that she wished that she was The Unfavorite out of the two. She and her sister see each other as getting the "better deal". This shows that being the "favorite" child isn't all that cracked up to be and that parents should favor their children equally.
It also gives us Helga Pataki herself as a deconstruction of the Tsundere trope. She's got a relationship with Arnold that looks on the surface like the typical foundations of a Slap-Slap-Kiss romance, but as we delve a bit farther into her family life we see that, along with her traumatized Purity Sue sister, she has an abusive Jerkass dad and a Lady Drunk mother, neither of which can provide much support in her daily life — if she's lucky. Looking at the show with slightly more jaded eyes, her volatile relationship with Arnold and her few friends become an increasingly obvious cry for help and an awkwardness with dealing with people nonviolently.
It even went so far that a psychologist was sent to deal with Helga's anger problems. A clear aversion of There Are No Therapists.
An episode of American Dragon Jake Long has a rare deconstruction of What the Hell, Hero?. After finding out that Jake had his Dragon Chi confiscated on purpose, Lao Shi rants him for irresponsible and not flawlessly rising to the job. The Annoying Younger Sibling angrily berates that being the American Dragon is not the icing on the cake. After being on the job for just a few days, she wouldn't even consider going for two more days - let alone two more years. She also points out all the things that Jake had to go through ever since he began his duties: always being late for school, lying to his dad, his own girlfriend forgetting about him, not to mention being the guardian of a magic realm that no mortal (other than Jake's friends) has any knowledge about. Lao Shi takes this to heart and decides to cut Jake's dragon training in half.
The Kid Hero trope is deconstructed in Batman Beyond: Return of the Joker. Being a youngster who fights evil won't spare you from the torture and brainwashing Mind Rape you'll receive once you end up in the claws of a sadistic, murderous, amorally psychopath. If you do survive it, you'll completely lose your sanity, it will take years of therapy to cure you, and you've to live with PTSD through the rest of your life.
Timothy Drake (as an adult):Fun and games. Boy wonder playing hero. Fighting off bad guys and no one ever gets... oh god. I killed him. I didn't mean to. I tried so hard to forget. But I still hear the shot. Still see the dead smile. Every night the dreams get stronger... he's there when I sleep. Whispering! Laughing! Telling me that I'm as bad as he is! We're both the same!
The Joker points out that for all the fear he invokes being The Cowl, Batman is not more than a pathetic Man Child crying out for mommy and daddy after all those years.
The Joker: I must admit, it's sadly anti-climactic. Behind all the sturm and bat-o-rangs, you're just a little boy in a playsuit, crying for mommy and daddy! It'd be funny if it weren't so pathetic.
Tim: Me and the others gave everything, but it just wasn't enough for the old man. I used to think, if I went on long enough, someday he'd retire and I'd... ah, the heck with it. Capes, costumes, bad guys - it was kid's stuff! Bruce probably did me a favor. By the end, I was so sick of it I never wanted to see that stupid Robin suit again...!
The New Batman admits that The Joker is a successful supervillain, but a pathetic comedian: he never made Batman’s laugh, nor corrupt or break him. He never was Affably Evil, just Faux Affably Evil. And maybe the clearer proof that The Joker is a mediocre comic is that he cannot deal with the natural enemy of a comedian: The Heckler.
Terry McGinnis: The real reason you kept coming back was you never got a laugh out of the old man.''
The Joker: I'm not hearing this...
Terry McGinnis: Get a clue, clowny! He's got no sense of humor! He wouldn't know a good joke if it bit him in the cape... not that you ever had a good joke.
The Chessmaster is deconstructed when everyone of the grown up Bat Family distrusts the Batman for his manipulative tendences.
Batman (McGinnis) [after his interview with Drake]: Were all of you that bitter when you left?
Barbara Gordon:Comes with the territory, McGinnis. Look up Nightwing someday, has he got stories.
Generator Rex does this with Dating Catwoman by showing how shitty it can be when the girl you're in love with works for the Big Bad. Even when she decides to quit working for said Big Bad, Rex still doesn't win her in the end.
"Party Of One" did the same to Pinkie Pie with her role as the Genki Girl. When people start making up excuses to avoid a party, and discovers them trying to do something without her, she extrapolates that everyone has gotten tired of her and gets clinically depressed as a result.
Twilight Sparkle has immense magical power, more than most unicorns, but lacks the real training to use it effectively (since up until she was sent to Ponyville, she literally spent all of her time reading and studying magical theory, not practice.) This really comes back to bite her in the flank in "Swarm of the Century" when she casts a spell to stop the Parasprite infestation from eating all the food in town. They stop eating the food all right...they just start ripping their way through the buildings instead!
"Lesson Zero" deconstructs the Once an Episode formula a lot of shows, including this one, use. Twilight freaks out because she doesn't have a letter to send to the Princess, as there wasn't much conflict in anyone's life lately. She goes crazy and tries to create a problem for her to solve, but things get horribly out of hand.
"Applebuck Season" deconstructs The Reliable One, when Applejack tries to harvest all the apples in Sweet Apple Acres by herself, because Big Macintosh injured himself, and be there for her friends at the same time. She ends up with severe sleep deprivation, and creates several issues such as flinging Rainbow Dash into Twilight's balcony, and practically poisoning plenty of ponies. The trope is deconstructed again in "The Last Roundup". Everypony expects Applejack to win enough prize money to pay for the city hall's repairs. When she only places second or lower (but still high enough to have LOTS of ribbons) in all of the events, she is so ashamed of letting down Ponyville that she decides not to return until she's earned enough money to pay for the repairs by working on a farm in Dodge Junction.
Recess has an episode of a new boy in their school who turns out to be a Mary Sue. He's a nice kid but the others want to challenge him so he ends up doing his best but that leads to the others seeing how he's better at everything they can do. They end up hating him for it and he's sad to have to deal with the fact that to be himself he can't have friends. He tells them this, which makes them more understanding, and leaves the school.
Trapped in TV Land: in video game form in the episode "Guardians of Sunshine". When Finn and Jake transport themselves into a video game through Beemo (Who told them not to), they realize that things are not what they seem. For one thing, they lampshaded the fact that if they lose all of their lives, it would be similar to dying in real life. Also, they can only carry just a few coins in their hands and the pain they feel in the game is real as the pain they feel in real life. The enemies in the game pose a bigger threat than expected. When Finn tries to activate the special weapon Bomba, he realizes that he can't do it without his controller. When Jake tries to pull Bomba from the screen, it causes an error that takes them to their world, along with the enemies they encountered (Note: The coin Jake kept turns into a penny, meaning the game currency is not worth much in the real world). The enemies were hostile towards Beemo for imprisoning them in the video game because they long for the sunshine.
Cloud Cuckoo Lander: The Ice King's seemingly harmlessly insane behavior actually stems from having been mentally warped by an Artifact of Doom. He used to be a normal, dignified, human antiquarian named Simon Petrikov, before being exposed to an enchanted crown. The ensuing change was slow and painful, and he was aware (and terrified) of the degradation the entire time. His insanity destroyed his relationships with his fiancee and surrogate daughter, and much of his strange actions are actually an attempt to replace them. In addition to that, it's implied that the only reason he is a largely harmless eccentric is that the mental remnants of his old self are restraining him - when this control occasionally slips, he is much moredisturbing.
Kid Hero: Finn has been fighting and killing monsters and supernatural beings since at least the age of twelve (his age when the series begins). Even though he's quite cheerful and upbeat most of the time, psychologically he's really messed up. In fact the reason he manages to stay upbeat despite the horrors he's seen is because he's very good at suppressing traumatic memories (he refers to the process as "putting them in the vault"; the fact that he does it so often that he has a term for it is a bad sign). Because he's spent so much of his life fighting and adventuring, he doesn't know much about making personal connections. His emotional immaturity and Blood Knight nature drove his girlfriend away, and his tendencies toward White Knighting are steadily getting creepier as he gets older. All he really knows how to do is punch things; life situations that require a more complex solution are beyond his ability to navigate.
That same episode also features a truly heart-wrenching deconstruction of How Can Santa Deliver All Those Toys?: trying to keep up with the increasing demands of a constantly growing and increasingly greedy world population has turned Santa's workshop into an ecosystem-killing Nightmarish Factory staffed with horribly inbred elves, the reindeer have mutated into vicious carnivores and Santa himself... well,"failing health" doesn't even begin to describe his condition.
Meg is a brutal deconstruction of Butt Monkey/The Chew Toy, as all the abuse she has to put up with made her a complete and utter psychological wreck.
The Ed Edd N Eddy finale movie deconstructs Amusing Injuries in a hard way, in which Eddy recieves a No-Holds-Barred Beatdown from his older brother. It's deconstriucted here because Eddy reacts as if he's seriously hurt and the kids (even Kevin and Sarah) react with fear. Not to mention the reveal that this is how his brother always treated him.
Cartoon Physics were also deconstructed in the infamous Bizarro EpisodeOne + One = Ed, featuring the Eds discovering all sorts of weird things, such as paper thin trees, eating the sun, messing with their outlines, etc.
An episode of The Simpsons deconstructed Scare 'Em Straight. Marge was away and Bart & Homer weren't doing their chores so Lisa made them think they had leprosy to scare them into cleaning up their filth. Instead, Flanders shipped them off to a Hawaiian leper colony.
The episode where a graveyard was built next the Simpson home deconstructed Wise Beyond Their Years. Lisa is scared out of her mind because she never learned to handle her childish fears.
Older than They Look is deconstructed in that episode where people find out Ned Flanders is a senior citizen. His wholesome living made him look younger than he really is but it also made him boring and predictable.
The infamous episode "The Boys of Bummer" is a brutal deconstruction of Disproportionate Retribution. The stock plot is about everyone in Springfield getting angry at Bart over something very minor, which has happened before on "Bart's Girlfriend," "The Telltale Head," and "Miracle on Evergreen Terrace" — all of which were played straight and for laughs. This time around, Bart loses a simple softball game and is bullied and harassed for it so much and so badly that he attempts suicide. He lives, but the townspeople still rag on him for losing until Marge steps in to yell at them. It's about as dark and depressing as you'd imagine and the reason why this episode is disliked among the few people who still watch modern-day Simpsons episodes or the former fan who foolishly decided to rewatch the show after years of ignoring it.
Then there's "At Long Last Leave" which shows that everyone in Springfield has had enough of the Simpsons. The town is bankrupt by Homer and Bart's destructive antics, and are annoyed with Lisa shoving her ideas into everyone's faces, not even Marge or Ned's preaching could change their minds and they boot them out of town.
Avatar: The Last Airbender deconstructed the Transformation Sequence in that Aang was actually left vulnerable when transforming into his Avatar State. His foes were fortunately too intimidated by the transformation to take advantage of this... until the season 2 finale, where Azula goes in for the kill during Aang's transformation. Subsequent transformations were instantanous, highlighting Aang's mastery of the Avatar State.
The Swan Princess deconstructed She's All Grown Up. The Prince and the Princess were reluctant to have their marriage arranged since they were kids. They meet each other again as young adults and the Prince immediately consents to the marriage after seeing how beautiful the Princess had become. She is instead offended because he can't come up with a reason to marry her besides her beauty.
South Park: "Miss Teacher Bangs a Boy" deconstructs Teacher/Student Romance (especially examples with younger children) by portraying the teacher in the relationship as incredibly delusional and manipulative.
"Conjoined Fetus Lady" deconstructs Inspirationally Disadvantaged as all the special treatment the titular lady gets just makes her feel like even more of a freak.
Young Justice deconstructs the Kid Hero into Child Soldiers by showing just how brutal trying to fight the same battles that the big league heroes could be. In one episode the team was left so traumatized that they had to get counseling just to deal with the ordeal they have went through during a botched training simulation. Then come the timeskip we see the majority of the group being resorted to nothing more than shell shocked veterans and unlike the comics death is played very straight as you actually have members of the team die in field missions. Greg sends the message loud and clear that saving the world and fighting bad guys isn't all fun and games.
As Told by Ginger deconstructs Alternate Character Interpretation and Reality Subtext. Ginger writes a poem titled "And She Was Gone" about a girl who is lonely and is implied to commit suicide. Her teachers immediately assume it's a cry for help and force Ginger to see the school psychologist. Her friends and classmates also have a similar reactions, which frustrates Ginger because it was just a story and had nothing to do with her life at all. It's pointed out that it's very easy to interpret someone's actions when we know very little about them but that it's almost impossible to know what someone else is truly thinking. Further emphasised by having Lois recognise it as just a good story - who knows Ginger better than her mother afterall?