Memes / Undertale

"Papyrus, what's your favourite food?"

Alphys: i spend all my time browsing memes now. it's my element

Given its wacky sense of humor and immense popularity around the Internet, it only makes sense that Undertale has spawned a large amount of memes.

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Please add entries in the following format:

• The meme. [[labelnote:Explanation]]The explanation behind the meme.[[/labelnote]] ^ExplanationLike this.
  • Further mutations and successor memes, if any.

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SPOILERS ARE UNMARKED, READ WITH CAUTION!

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Sans and "Megalovania"

Sans and his battle song are full of memes, to say the least.

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• Basically anything said by Sans during a Genocide Run:
  • "Do you wanna have a bad time?" / "You're gonna have a bad time." ^{Explanation (Spoilers)}A line spoken by Sans before his boss fight / near the end of Snowdin, respectively, on a Genocide route, foreshadowing that he's going to give it his all to stop you if you continue down this path. Fans have latched onto it, using "having a bad time" as a euphemism for the extremely tough Sans fight and the Genocide runs in general, and it's often quoted out of context if something can be connected to those things.
  • A further application of the above is altering the phrase, accompanied by a poor MS Paint drawing of Sans.
  • "geeettttttt dunked on!!!!" ^{Explanation (Spoilers)}A line Sans trolls you with on the game over screen if you spare him. Used to describe any sort of Curb-Stomp Battle, including the Sans fight, and has also been connected to Undyne using Alphys as a basketball during the latter's date sequence in a Pacifist run.
  • "on days like these, kids like you..." ^{Explanation (Spoilers)}Sans' brief speech before his boss battle has become very famous, and a defining part of the Sans fight. Often used out-of-context with the last part being cut out; even Toby himself has done this. It should be noted, though, that Asgore usually also says "Birds are singing, flowers are blooming", so it's possible that Sans took that quote and twisted it for the occasion.
    • "flowers are singing, birds are blooming. ...fuck." ^ExplanationA popular joke is of Sans flubbing his Pre-Asskicking One-Liner.
  • "hey there buddy chum pal friend buddy pal chum bud friend fella bruther amigo pal buddy friend chummy chum chum pal i don't mean to be rude my friend pal home slice bread slice dawg but i gotta warn ya if u take one more diddly darn step right there im going to have to diddly darn snap ur neck and wowza wouldn't that be a crummy juncture, huh? do you want that? do you wish upon yourself to come into physical experience with a crummy juncture? because friend buddy chum friend chum pally pal chum friend if you keep this up well then gosh diddly darn i just might have to get not so friendly with u my friendly friend friend pal friend buddy chum pally friend chum buddy" ^{Explanation (Spoilers)}A bastardization of Sans' speech to you before his boss fight in the Genocide route, which quickly became popular to quote among fans thanks to its comedically wordy language.
  • "You felt your sins crawling on your back." ^ExplanationA line reflecting how much trouble you're in against Sans. Fans have taken it and use it as guilt admittance, like "I felt my sins crawling on my back" or "Do you feel your sins crawling on your back?"
  • Taking an enormous amount of damage/having 1 HP and dying in one hit, usually from something innocuous. ^{Explanation (Spoilers)}Sans is "the weakest enemy," with all his stats set to 1, and — being the last enemy you fight on a Genocide run — takes more damage than anyone else when you finally hit him. Fans have made comedy out of this by claiming that Sans will die from stubbing his toe or a Bitch Slap.
• Farmer Sans/オイラショック (Oira Shock) ^ExplanationThe Japanese localization introduced in the trailer for the PS4 port had Sans referring to himself with the pronoun オイラ (oira). However, oira is commonly associated with people from a rural background, hence the Japanese fandom responded with fanart depicting Sans in such a manner.
• "you dirty brother killer." ^ExplanationSaid by Sans if the player kills Papyrus on a Neutral run. And to many a player, anyone who actually goes through with killing Papyrus is very much deserving of being labelled as such.
• PTA Sans ^ExplanationAn AU (alternate universe) where Sans becomes Frisk's awesome parental figure and becomes involved in Frisk's school, often butting heads with two antagonistic parents named Linda and Helen. Hilarity Ensues. seems to be working its way around Tumblr.
• AU where Sans is a troper! ^ExplanationUndertale has a very large amount of fan-made alternate universes, many of which are heavily Sans-centric or built around a certain theme, so a common response to fan-art or fan-made content is to describe a joke AU with the context of said fan-art.
• Sans is Ness. ^ExplanationA theory focused on in Game Theory's video on Undertale. Due to the infamous reputation of Game Theory on parts of the web, combined with the fact that Toby himself publicly denied this theory, this frequently gets brought up by fans when talking about outlandish fan theories.
  • "Sans is already in Super Smash Bros.." ^ExplanationThe reveal of Super Smash Bros. Ultimate and a Switch port of Undertale on the same day gave rise to a slew of posts that, jokingly or otherwise, suggested an Undertale character for Smash — Sans naturally being one of the most frequently seen. Many people joked that, since Game Theory claimed that Sans is apparently Ness, he's actually been there right from the start.
• "SANS IS ACTUALLY IN SMASH" ^ExplanationOn September 4th, 2019, Smash fans were in for a surprise when, shortly after a Nintendo Direct, it was revealed by Sakurai that Sans was actually coming to the game as a Mii Gunner costume, along with a remix of Megalovania from Toby Fox himself. While that didn't exactly make him a playable character, he got far closer than anyone thought he would get, leading to a fresh surge of "Sans for Smash" memes.
  • Sans isn't actually in Smash.^ExplanationSince Sans is only a costume, his status as The Slacker led to jokes that he was too lazy to actually show up, and instead just sent them his outfit and a mask. Or alternatively, it's the player character who's wearing the costume.
• Steven After Not Surviving ^ExplanationSomeone (LouLouVZ, creator of Spaicy) posted what was (probably) a parody of the more outlandish theories, suggesting that Sans is Steven Universe after dying of cancer. Naturally, this sparked a further escalation of increasingly absurd fan "theories" trying to one-up each other in terms of sheer implausibility, leading up to acronyms like "Secretly Actually Ness Skeleton" (see above) or "Shrek After Nuclear Strike." This meme would later on be referenced in Deltarune's "$pamton's $weepstakes" event where one of the items in the website for the event (a jar of white sand with a pink ball and a yellow ball) was referred to as "Spamton After Not Surviving".
• so cool! so cool! so cool! so cool! so cool! ^ExplanationThis seems to have been accepted among the fans as Sans' default response to anything and everything he finds on the internet.
  • SANS, WHAT ARE YOU DOING? SANS! SANS! SHUT THE FUCK UP, SANS!^ExplanationPapyrus' response to the above.
• Sans Undertale ^ExplanationSans' popularity eventually got so intense and overbearing that his fandom caved in on itself, leading to this meme being used to poke fun at him and his remaining fans. It began as just a bastardization of his name, and was later accompanied by a picture of a poorly drawn Sans or another massively popular character from another fandom (most commonly Nagito Komaeda from Danganronpa who received a similar treatment) badly photoshopped over a picture of the Judgement Hall at the end of the game. Later on, this mutated into anytime Sans, the song Megalovania, or both appear out of nowhere in videos or other games. This meme has since reached a level of ubiquity to the point where pretty much any fictional character you can think of has been referred to as if their last name was the name of the work (written as one compound word if necessary).
• First Four Notes of Megalovania ^ExplanationThe above meme mutated into a new meme due to the frequent use of Megalovania in memes. The song was so insanely popular even before this that it is now immediately recognizable with just the first four notes (or even less), which has become a meme in and of itself. Some people who are not Undertale fans, and even some that are, find the song overdosed and overplayed, so when the first four notes of it appear out of nowhere it's meant to be a jab at people who are irritated by it.
  • EarthBound SoundFont > Overdriven Guitar ^ExplanationThe specific sound used for the ostinato used in Megalovania is a sample originally recorded by Shigeru Miyamoto on his guitar for the finale of EarthBound, which in the first part of the final boss sports a fairly heavy rock-style boss theme. Being instantly recognisable nowadays due to Undertale's popularity, the extremely compressed sample has become somewhat of an inside joke among those knowledgeable in music production.
• Sans Fangirls. ^ExplanationAs mentioned above, Sans's popularity was so intense his fandom collapsed in on itself; this is partially attributed to some younger fans of the game liking him so much that they proceeded to create characters to ship him with, usually poorly-drawn girls who go Yandere at the drop of a hat and threaten to (or in some cases outright) brutally murder their "rivals". Nowadays, you have a higher chance of seeing parodies of these fangirls than seeing any genuine fans.
• Canon Sans vs. Fanon Sans. ^ExplanationSans' implied depression is a common focus in fan works, but a great deal of them completely miss the mark on how it manifests. In particular, he's frequently portrayed as being extremely emotional and breaking into tears at the drop of a hat, while his canon self portrays it as a complete lack of emotion and motivation. Similar to the "Sans Fangirls" above, fans have parodied this, making humorous comparisons between the two, or portraying them as separate characters altogether.
• This image of Monika T-Posing over Sans. ^ExplanationA fan art made by sansurichin, the pose is used to depict dominance from one side (Monika) and the other side cowering in fear (Sans). As DDLC came to be another genre-subverting game of the later 2010's, the similarly meta-aware Monika came to become as memetic as her peer Sans. Monika's full-blown Breaking the Fourth Wall habits made her incredibly Genre Savvy even in comparison to Sans, thus the joke being that a random high school girl was able to intimidate a Memetic Badass into submission. Label edits of this particular image became very, very popular soon after.
• "Fingers in his ass Sunday". ^ExplanationA crude MikuMikuDance video of Sans and Nagito Komaeda dancing in the Last Corridor, set to a remix of "ASGORE" by YouTuber BotanicSage that centers around an infamous Amber Rose tweet about Kanye West's sex life. The absurdity of the video and its surprising appropriateness to both Sans and Nagito's personalities made it quickly catch on among Undertale fans, and since then it became a tradition to repost it every Sunday on Tumblr.
  • "The last legal Fingers in his ass Sunday". ^ExplanationAs December 16th, 2018 was the Sunday before Tumblr enacted its ban on Not Safe for Work content, users of the site have dubbed that day as such, with many artists drawing works of Sans and Nagito Komaeda sharing incredibly heartfelt goodbyes as they face their (theoretical) end. Many users have expressed their disbelief at themselves getting emotional over the meme itself, while others argued there’s not much point to the date name considering people are still going to make content of the meme after the ban’s enactment.
• Sans Default Dancing.^ExplanationGiven that both Sans and Fortnite dances are incredibly popular in ironic memes, a combination of the two was pretty much inevitable. This ended up becoming canon thanks to the 5th Anniversary Alarm Clock app dialogue.
• "Maybe it's the way you're dressed?" ^ExplanationIn 2019, the Soundcloud account "UNDERTALE OST: Recreated" did some detective work, and found out that Sans's "voice" snippet was trimmed from Patrick Star saying "maybe it's the way you're dressed" in the SpongeBob SquarePants episode "Something Smells". SpongeBob being as ripe for memes as it is, the jokes wrote themselves.
• Sans with a Gaster Arm Cannon ^ExplanationAfter being made into a Mii Costume in Super Smash Bros. Ultimate, he got classified as a "Mii Gunner", meaning that he has to carry an Arm Cannon. The design team chose a Gaster Blaster, and many memes started portraying Sans having said Arm Cannon attached to himself in the game, with the other characters having appropriate reactions to Sans constantly holding a weapon.
  • "Nobody cared who I was until I put on the mask." ^ExplanationA joke playing on how the Mii Gunner was seen as a generally unremarkable character before experiencing a drastic increase in popularity after Sans became a possible alternate costume for them.
• Sans merely existing has become a meme itself. This video states that every single bit of Sans has become a meme in its own way, and this led to things like Sans being a Mii Fighter costume in Super Smash Bros. Ultimate, as Kenny Omega's costume in All Elite Wrestling's Halloween promo, and appearing on Jack Black's t-shirt◊.
• Sans Console.^ExplanationThe PlayStation 5's designs got fans comparing it to Sans' design and colors, particularly the DualSense controller design. The fact that Undertale as a PS4 game that can be backwards-compatible with PS5 doesn't help.
  • DualSans controller.^ExplanationThe PS5's DualSense controller has its name struck with a Punny Name by slapping Sans' name into it. Even the edits of the controller have Sans' face slapped on it.
• Megalovania but ^ExplanationA sudden wave of Megalovania mixes flooded Youtube soon after - Yukiko - uploaded a video called Megalovania but beats 2 and 4 are swapped. The end result? Somehow, it still ended up being a good track. This caused a number of others to try their hand at mixing the song in its vein, eventually evolving to the rest of the soundtrack as a whole.
  • Making Megalovania sound bad / You cannot make Megalovania sound bad ^ExplanationThe "goal" of the people who mix up Megalovania, as said by the comments section, is to make Megalovania sound bad. These mixed up versions always sound good, so people have joked that you cannot make Megalovania sound bad no matter how hard you try.
• X but it's Megalovania. ^ExplanationRemixing songs with Megalovania's soundfont. The same works with Bonetrousle.
• Perfectly timing Megalovania's beat drop at 12 AM on New Year's day. ^Explanation Exactly What It Says on the Tin. See for yourself.
• "call it knochen könig and have it be for storyshift sans" ^{Explanation (spoilers)}On SoundCloud, some fans make remixes of the game's music where they combine certain characters' leitmotifs with other characters' leitmotifs for fanmade AUs. There's a bit of a debate over whether "Megalovania" is Sans' leitmotif, Genocide Chara's leitmotif, or the Anomaly's leitmotif. And fans who think it's Chara's theme would make remixes of "Bergentrückung" and "Asgore" and apply "Megalovania" to it, and fans who think it's Sans' theme would harass the uploaders telling them to rename it to "Knochen König", which is German for "Bone King". And people eventually just started jokingly saying it on remixes of completely different songs.
• Sans Gaming^ExplanationA YouTube channel where every video and its description are titled simply Sans Gaming, which mostly uploads Sans memes, above others. Of course, the channel itself became a meme, and in some countries, the mention of Sans can cause someone to type in "Sans Gaming" in their language (for example, "Sans Granie" for Poland).
• Garfield and Sans^ExplanationThanks to Toby Fox having a well-documented history of referencing Garfield in his pre-Undertale output, fans of both the game and the comic strip took to making fan content associating Sans with Garfield, himself a fellow Fountain of Memes, be it through depicting the pair interacting or depicting one taking the role of the other. The fact that Toby himself uses a Garfield/Sans fusion as his Minecraft skin only amplified the jokes connecting the two characters.
• The Poopshitters^Explanation An image of a group of realistic Sans with the aforementioned title became popular in 2021, often portrayed as a music band.
• #SANSSWEEP ^ExplanationIn September 2022, the Twitter account Tumblr Sexyman OTD hosted a "semiannual sexyman showdown" poll to crown the ultimate Tumblr Sexyman. In the final round, Sans went against Arataka Reigen. With both characters' Memetic Badass status and being very popular sexymen, the poll inspired a lot of bickering, memes, and fanart of Sans and Reigen fighting (or making out). Eventually, Sans won by just 0.1 percent out of over 244 thousand voters, and even Toby Fox himself had something to say about it.
  • The Sans Sweep was so strong it killed the Queen. ^Explanation Queen Elizabeth II passed away less than a day after Sans won the Tumblr sexyman poll. Many people have commented on the unusual coincidence of how the two contrasting events happened so close in time, with some even joking that the competition is what killed her.
• Hey kid, do you want a weiner in your mouth? ^ExplanationA fanart of Sans holding a hotdog accompanied by a voiceover of him asking the viewer if they want it in their mouth became a popular Bait-and-Switch. The original artist of the fanart even redrew it in honor of the meme.
• whoa hey pal lets back it up a bit^ExplanationA reaction image with Sans in a Spooky Dance pose where he looks like he's holding his hands out between him and something disturbing or surprising.

Specific characters

Of course, other characters of the game are as popular and memey as Sans is.

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Flowey/Asriel:

• "Friendliness Pellets". ^ExplanationFlowey attempts to trick the player at the beginning of the game by telling them to touch his deadly magic bullets, saying that they're actually "friendliness pellets" that monsters communicate with. It's Flowey's Establishing Character Moment, so they're often connected to him and "LOVE" in general.
• "In this world, it's kill or be killed". ^ExplanationOne of Flowey's first, most memorable, and also most frequently used phrases. Much like Sans' "do you wanna have a bad time?", this phrase is frequently altered and accompanied with a conksuck drawing of Flowey or paired with an image of a flower with a face.
  • It also spawned a lot of derivatives following the format "In this world, it's [X] or be [X]ed".
• Omega Everyone ^{Explanation (spoilers)}As the final boss of the Neutral route, Flowey gains a monstrous photorealistic form known as "Photoshop Flowey" or more commonly "Omega Flowey". It is common for fanartists to create similar Omega forms for other characters, such as Temmie◊, Papy◊rus◊, Aaron◊, Woshua◊, Burgerpants◊, Lesser Dog◊... and Donald Trump◊?
• ______ is now playing Undertale
  ______ is now playing Undertale
  ______ is now playing Undertale
  ______ is now playing Undertale
  ______ is now playing Undertale ^{Explanation (spoilers)}Photoshop Flowey is a very difficult boss in the Neutral Route. Upon losing to him, he will crash the game, forcing you to restart it, which pops a toast notification to your Steam friends.
• Big boner down the lane ^ExplanationA silly-sounding Dummied Out bit of text in the game's files. The phrase gained popularity after a video of a corrupted version of the game showed Flowey saying it right before his boss fight.
• But it refused. ^{Explanation (spoilers)}In Asriel Dreemurr's fight, dying will cause your SOUL to break apart, but it refuses to die and continues the fight. The text accompanying it, "But it refused.", has been used for strength and encouragement in the fandom, and is also used whenever something that someone doesn't want to happen occurs anyway, and vice versa.
• Wide Asriel ^{Explanation (spoilers)}When Asriel transforms into his final form, he briefly widens his body. This scene is often compared to the "Wide Presidents Walking" meme.
• Emo Asriel and his edgy OC ^{Explanation (spoilers)}Asriel is often portrayed in not-so-serious fanworks as an Emo Teen, and his final form (and less commonly, Photoshop Flowey) is often joked to be his OC that he created before he died, to the point that some treat it as Fanon. Became Hilarious in Hindsight when the artbook revealed that Toby Fox considered giving him "boyband hair".
• Photoshop Flowey: NO!! NO!!!!! YOU CAN'T DO THAT!!! YOU'RE SUPPOSED TO OBEY ME!! The seven human souls: ^ExplanationIt's common to respond to pictures of seven things in different colors by quoting Photoshop Flowey's dialogue when he is defeated, followed by "The seven human souls/[things in the picture]:".

Toriel:

• Goat Mom is Best Mom. ^ExplanationAlthough a clear example of My Beloved Smother, she really does want only the best for the protagonist. Today, there's tons of art showing her being genuinely motherly to either the protagonist, or other characters.
• Don't sexualize goat mom. ^ExplanationShortly after the demo's release, Toriel became a prominent source of Rule 34 primarily from the Furry Fandom. This is a common response to said smut, or a message not to make it.
• "if you were the toriel cosplayer who gave me a blowjob at dragoncon, PLEASE inbox me. i think you took my wallet. it looks like an NES" ^ExplanationAn infamous Tumblr post. Nothing more can be said, aside from the fact that it's likely fake (DragonCon occurred before the game's release, but fandom around Toriel had already formed after the demo's release).
• Toriel vaping. ^ExplanationMore specifically, pictures of a person in a Toriel fursuit vaping that caught on due to how much it contrasts with Toriel's personality.
• tuTORIEL ^ExplanationA portmanteau of tutorial and Toriel. This is usually inserted into Undertale tutorial videos as a comment. Ended up reaching Ascended Meme status in Deltarune, where Chapter 2 sees Kris' prison cell in Queen's mansion decorated with items based on their search results, including two piano-playing Toriel holograms because they searched "video game piano tutoriel".
• Homophobic Toriel. ^{Explanation (spoilers)}Some players have noticed that Gerson talks about how Toriel and Asgore used to display affection in public when they were married, while Toriel stops Undyne and Alphys from kissing in front of Frisk in the True Pacifist Route. This, along with Deltarune implying that she's religious, has caused fans to jokingly theorize that Toriel is homophobic, and that the reason she and Asgore are divorced in Deltarune is because she disapproved of Asgore's feelings for Rudy.
• my child you are breaking my heart ^ExplanationIn the release trailer, there's a scene where a CGI Toriel crashes into blocks with the above text, with the text "Probably not actual game footage?" under it. Needless to say, this scene isn't actually in the game. This scene is probably the trailer's most well-known scene due to its absurdity, and the CGI Toriel has since also appeared in the Nintendo Switch trailer and the 6th anniversary livestream.

Papyrus:

• "That's the trash can. Feel free to visit it any time." ^ExplanationPapyrus says this during the date if you examine his trash cans. Fans have re-appropriated it for a variety of purposes, the most popular being the "Sans dies first and Papyrus becomes a vengeful badass" Fanon as his variant of the "get dunked on" quote above.
• "The internet! I'm quite popular there!" ^ExplanationIn-universe, this is just Papyrus being a comically oblivious Small Name, Big Ego as usual. He's twelve away from a double digit follower count; think about that for a second. How did Papyrus get -2 followers? Out-of-universe, he's possibly second only to his brother in overall popularity among the Undertale cast.
• "I didn't cry! I just… caught something in my eye." "What did you catch?" "TEARS!" ^ExplanationAn exchange between Papyrus and Sans that's used when referring to the sadder moments of the game.
• Papyrus and spaghetti. It's become a symbol for him.
• "Oh, no! You're meeting all my standards!" ^ExplanationIf you flirt with Papyrus at the beginning of the battle, he asks what your redeeming qualities are, warning you that he has very high standards. Regardless of what you choose (and your choice is between "I can make spaghetti" and "I have zero redeeming qualities") he reacts with this line, which is used as a form of Self-Deprecation on the fandom's part whenever they find someone sharing their interests.
• "You're blue now. That's my attack!" ^ExplanationPapyrus' famous "blue attack" turns your SOUL blue. Quite a bit of fanart has been made of this moment. It has also been used in response to images that are blue, especially if the image wasn't originally that color.
• "Sans! Stop plaguing my life with X!" ^ExplanationA snowclone based on one of Papyrus's lines; the original line was "incidental music." When Papyrus discovers that his bone collection has been stolen by the Annoying Dog, Sans pops his head out of his room just to play Losing Horns for the occasion. Papyrus responds with this line.
• Referring to concept art Papyrus◊ with various bastardized names such as the Alright Papyrus, Papaya, Paperpenis, or Popeye.
• Papyrus no longer believes in you / "I'm going to have LOTS OF FUN!" ^{Explanation (spoilers)}Two quotes mentioned within videos of Genocide Papyrus, the first connecting with his Genocide theme, Disbelief, and the comic video, Papyrus no longer believes in you, while the other comes from the comic video itself.
• Nobody kills Papyrus / The hardest boss of Genocide run. ^ExplanationPapyrus has developed a reputation for making Genocide runs very difficult — not because he's hard, far from it (on Genocide, he immediately spares you and refuses to attack), but because players simply cannot bring themselves to harm Papyrus.
• Reading Papyrus' dialogue in Skeletor's voice is practically a requirement now.
• "Papyrus, what's your favourite food?" ^ExplanationOn the one-year anniversary of Undertale’s release, Toby Fox made a Q&A blog where he proceeded to answer ten user-submitted questions. The submission page used an example of "Papyrus, what's your favourite food?" At least ten users submitted that as their questions, and Toby ended up only answering that question.
• RED X ARE IMPASSABLE! YOU CANNOT WALK ON THEM! YELLOW X ARE ELECTRIC! THEY WILL ELECTROCUTE YOU! etc. ^ExplanationWhenever Undertale fans see a picture of a bunch of colored squares, or pretty much anything that comes in a lot of colors, it's pretty common to see comments quoting Papyrus' explanation for the tile puzzle's rules.
• Let Papyrus Say Fuck Day ^ExplanationJune 16th has been declared Let Papyrus Say Fuck day, a day where the Tumblr side of the fandom makes posts involving Papyrus doing "adult" things such as swearing or committing crimes, to combat the frequent infantilism done to him by the fandom.
• Papyrus is Uncle Aaron.^Explanation A Twitter user noticed that Uncle Aaron and Papyrus have a similar head shape. This has led to memes and edits about them secretly being the same person, in a similar vein as the "Steven After Not Surviving" meme about Sans, often with acronyms like "Prowler After Perishing".
• WHAT IS A SKELETON'S FAVORITE SNACK?!^ExplanationYoutuber and voice actor Tom Schalk made a video of himself messing with a skeleton puppet, trying to tell a joke to a friend and becoming irationally angry when he can't guess the answer. Due to the loud gravelly voice Tom used, people associated the audio with Papyrus, making animations of Papyrus trying (and failing) to tell a joke and becoming comically angry in the process.

Undyne:

• "Undyne suplexes a huge boulder, just because she can." ^ExplanationOne of the descriptions in the dialog box during the fight with Undyne reflecting her Hot Blooded-ness. It's become a snowclone, with "huge boulder" being replaced with something else.
• "ANIME'S REAL, RIGHT?!?!"
  • ♥ Anime is real
  • Anime is not real. ^{Explanation (spoilers)}At the end of the "date" with Alphys, Undyne has a brief crisis when she's faced with the possibility that "human history" is not actually truthful, and asks you the truth in her panic. It's given as much attention as some far more important choices in the game, and the sheer ridiculousness has led to this question being tossed around as Serious Business. Also, anything relating to Undyne the Undying will be met with at least one person saying that, yes, anime is real.
• Her cooking methods. Mostly because it connects with Papyrus and his spaghetti.
• "WELL??? Are you CHERISHING??? CHERISH HARDER!!!" ^ExplanationIf you befriended Undyne and call her in the room with the bird that flies you over a disproportionately small gap, she tells you to cherish the bird. Calling her again causes her to say this line. Fans of course adapted it to cherishing all kinds of things.
• Fish Vriska ^ExplanationUndyne bears many resemblances to Vriska Serket of Homestuck, both in appearance and personality.
• Undying ZUNpets / Undyne the unused Touhou Boss. ^Explanation In a recent crossover meme with the Touhou Project a lot of people have noticed how Touhou's memetic "ZUNpets" use the same sample ("Romantic Tp. from the Roland SD-90") as the trumpets used in Undyne's "Battle Against A True Hero" boss theme. "Battle Against a True Hero" also uses a very similar song structure to many lategame Touhou boss themes. Not only that, but Undyne is one of the definitive difficulty spikes in Undertale's Genocide run, so people commonly joke that Undyne channeled her inner Touhou to make the Bullet Hell segments of her bossfight much harder. As Toby is a known fan of the Touhou series, these references are likely intentional.

Mettaton

• Mettaton going "Awooga." ^ExplanationA joke he makes if you compliment his voice during his boss battle — he has the voice of a siren, see.
• Mettaton's flamboyant posing is a meme in and of itself, often being compared to JoJo's Bizarre Adventure or David Bowie.
• "Would you smooch a ghost?" ^{Explanation (spoilers)}Partway through Mettaton's quiz, he asks the player this question, and rigs it so that it can't be answered with anything but "Heck Yes", because Mettaton is a ghost and is inflating his ego as usual. Fans use it for both Mettaton himself (mainly his attractive EX form), as well as resident adorable ghost Napstablook.
  • "Would you smooch a goat?" ^note An offshoot of the above meme, based around the Dreemurrs.
• Mettaton's legs. ^{Explanation (spoilers)}It's become popular to add his EX form's legs onto other characters from the game (mainly Sans, for the comedy inherent in his being one of the shortest characters). Possibly in response to his line, "Who needs arms, with legs like these?" if you remove his arms during the battle.
  • leg so hot, hot hot leg, leg so hot, you fry an egg. ^ExplanationThis predates Undertale by at least a few years, but it seems to have become the standard response to anything that involves Mettaton's legs.
• Mettaton NEO is infamous for being a literal Zero-Effort Boss despite looking awesome and having a badass buildup. Many YouTube videos and Vines exist dedicated to mocking how ridiculously easy the battle is. Or, alternatively, to try to give him an opportunity to shine and to be a badass.
  • Some have joked that NEO stands for Non-Effective Obstacle. However, this joke is dead as of Chapter 2 of Deltarune, whose secret boss, Spamton NEO, not only is the strongest boss in the chapter, but he even turns Nigh-Invulnerable in the Weird Route.
• OOHH YEEES~ ^ExplanationMettaton says this in a very sexual manner upon transforming into his EX form. It's one of the very rare quotes in the game not to use Voice Grunting. Because of these reasons, it's become a popular sound effect. His "YEAH," the sound he makes when you hit him during his boss battle, also qualifies as a meme, although it's less common.
• Similar to Papyrus, anyone familiar with Markiplier tends to use his voice for Mettaton.
  • Even Markiplier himself decided the character sounded like him... leaving him to do an impression of himself for all Mettaton's dialogue.
• Everybody gangsta until the calculator turns into David Bowie. ^ExplanationA lot of jokes are made about the contrast between Mettaton's initial simple box form and his fabulous humanoid EX form.

Asgore

• Asgore "You Must Be This Tall To Live" Dreemurr ^explanationDue to being partially, if not completely, responsible for the deaths of (what were likely) 6 children, the fandom loves to create nicknames like these◊ for him.
• ASGORE YOU USELESS FUCK ^ExplanationProbably due to this, a common joke is that the barrier isn't that big of a deal like Asgore makes it out to be, and that there were probably several workarounds that he could've used to free everyone instead of waiting for humans to drop in (such as digging under the barrier).
• Asgore Did Nothing Wrong ^ExplanationAsgore's fans have taken it upon themselves to create a counter-meme to the above.
• Asgore "Epic Divorce Man" Dreemurr ^ExplanationThe result of a tumblr combining tweets from the infamous "dril" account with pictures from Undertale (this one in particular). Has probably been strengthened with the release of Deltarune, as it seems that Toriel and Asgore's wholesome marriage really does tend to end with the two of them on bad terms in every universe.
• NO MERCY/Asgore Fight In A Nutshell ^ExplanationIt's very common to edit videos involving someone smashing an object into bits into parodies of Asgore destroying the Mercy button before his fight, as shown here.
• Asgore named X. ^ExplanationAsgore is quite known for his Giver of Lame Names characteristic, so when there is something named absurdly specific, this is a common response.
• Burgertrucking ^ExplanationA frequent misspelling of Asgore's pre-battle theme, which led to some fanart of Asgore running a burger truck.
• Dentist Asgore. ^ExplanationBefore the battle with Asgore, he tells you to "think of it like a visit to the dentist". This has led to fanart and memes of Asgore as an actual dentist, often replacing his trident with a giant toothbrush. Alternatively, since he compares a fight to the death to a dentist visit, there's some jokes about him being scared of dentists, too.

The Fallen Human/Chara:

• 201X/The first human has fallen. ^ExplanationThis meme began circulating around New Year's of 2019. Since the year Chara fell down was "201X" according to the game's intro, this means that 2019 is the last time Undertale could have taken place in. With the revelation that there is an actual Mt. Ebbot in Spain, people began speculating that Chara had already fallen down the mountain, and that the events of the game will take place in the future. Even Toby Fox got in on this meme.
• I am [insert something silly] ^{Explanation (spoilers)}When you meet Chara at the end of a Genocide run, they introduce themself: "I am [player's name]". Fans jumped on the opportunity to humiliate the detested child by inputting stupid things at the start of the game and watching Chara◊ insult themself◊. (The latter screenshot is obviously edited, but it's still possible to have Chara say that, minus the rainbow effect. Also note that the fallen child's name cannot exceed six characters without editing the game. However, even with these limitations, some still make jokes with the name.)
  • You're not actually [something stupid], are you? ^SpoilersLikewise, Asriel's line from the Pacifist route gets abused as well.
• No chocolate. ^SpoilersA sentence pronounced (or thought) by Chara in red letters when looking in Asgore's fridge in a No Mercy run. Because of its silly and unexpected nature, especially when you think it is the character whose obsession is to kill everyone who says that, the Fallen Human's taste for chocolate has been flanderized to obsession on the Internet, making them a Draco in Leather Pants.
  • Chara hates white chocolate. ^SpoilersAmong chocolate-lovers, white chocolate is frequently compared unfavorably to milk and dark chocolate thanks to it consisting mainly of cocoa butter with no actual cocoa solids. Consequently, several members of the fandom have decided that the chocolate-loving Chara holds similar disdain for white chocolate. An example here.
• Discussions about Chara's morality are a meme by themselves. While some still want to argue peacefully (or simply refuse to take one side or another), two radically opposite "squads" formed to convince every other fan with their ideas:
  • Chara Protection Squad ^{Explanation (spoilers)} Because of the longstanding debate over whether Chara/the Fallen Human is actually evil or not, those who believe they are good have labeled themselves the "Chara Protection Squad" (or "Chara Defense Squad"). This has crossed over to other works with other Character Protection Squads.
  • Chara Offense Squad ^{Explanation (spoilers)} In contrast with the above, those who believe Chara to be truly evil to some degree call themselves "Chara Offense Squad" in contrast with the ones above, accusing them of being too biased and ignoring important points of the story. They also ask themselves how much the Fallen Human really cared for the monsters and their adoptive family.
• Chara's name debates.^ExplanationAmong the many aspects of Chara that are hotly debated, one of the sillier/more minor ones is how to pronounce their name. Fans are split between calling them "Car-a", "Care-a", and "Char-a", although one thing they all seem to agree on is that it should never be pronounced "Chair-a".
• Comparing (Genocide) Chara to Not Important.^ExplanationThey both want to kill everyone, if for wildly different reasons. Also may have to do with how he proclaims "My genocide crusade begins here" in the teaser trailer for the game.
• You can't spell DETERMINATION without TERMINATION. ^Explanation Is sometimes used when players talk about the Genocide run. Most of the time it is pasted over a picture of Chara.
• Chara's flesh stripe.^ExplanationDue to the limited color palette of Chara's sprite, the stripe on their shirt is the exact same color as their skin. This has led to all sorts of alternative interpretations of their appearance, from Chara wearing a crop top to their clothes being made of flesh.

Other

The rest of the game also has its part of memetic moments.

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• The Temmies' manner of speech in general. "Temmie get money" in particular, as well as references to Temmie^note the Temmie shopkeeper, to be more specific needing money for cool leg college.
  • RATED TEM OUTTA TEM!^ExplanationAfter the January v. 1.001 patch, when checked, Temmie's ATK and DEF are replaced with this.
• "DETERMINATION"/"[X] fills you with determination." ^ExplanationThe message from the save points, which is one of the most commonly snowcloned lines in the fandom that is often refitted for many different purposes.
• Combining the two above, Detemmienation. ^ExplanationThis pun is actually used for the Temmie Village save point, and is particularly memorable in its silliness.
• "Dogsong" in general, due to its wackiness. Thanks to it being used in places like the "Spare Sans" Non-Standard Game Over and the Hard Mode ending, and its connection to the Annoying Dog, it's become associated with Toby Fox being a huge Troll, and trolling in general.
• "I'm 19 years old and I've already wasted my entire life."^ExplanationA memorable quote by Burgerpants.
  • On a similar note, the cynical and surprisingly badass gem: "I can't go to hell. I'm all out of vacation days." ^note Both are often quoted or used as reaction images due to their memorability as well as some being able to relate to them.
• "Fuck Jerry." ^ExplanationIn-game, the monster Jerry is Hated by All, even the monsters. Naturally, the fandom ran with this and treat Jerry as the one nobody likes, as well.
• Give Asriel Jerry's soul! ^ExplanationEveryone wants to help Asriel, and since nobody likes Jerry... Whenever there's a post about poor Asriel, fans tend to say this in the comments.
  • Asriel would ditch Jerry's soul. ^ExplanationJerry's soul is probably so obnoxious, even Asriel would ditch it!
• Misremembering Heats Flamesman's name. ^ExplanationA meme based on Heats Flamesman, an NPC in Hotland who tells you to remember his name and appears later asking you if you remembered or not. The meme adds on to the latter option, where people intentionally call him something else.
• WORSHIP ^{Explanation (spoilers)}The rallying cry for fans to express their allegiance or, uh, Perverse Sexual Lust towards Adult Asriel, who declares himself The God of Hyperdeath.
• Striped shirts and -_- ^{Explanation (spoilers)}The Monster Kid tells the player character that they know you're a kid like them because you're wearing a striped shirt. Chara and Asriel also wear them, so of course there are jokes to the tune of 'Frisk is actually a short 19-year-old'. Frisk's unchanging expression, which the final boss of the neutral route even mimics when saying they'll wipe out humanity, is also either joked to be a common trait of the humans (with Chara only having an open-eye smile because they've become a demon) or something like them just squinting all the time.
• Wosh u SOUL ^ExplanationOne of popular monster Woshua's more creepy lines that's used only if you've killed someone during that playthrough. Usually in reaction to somebody saying something dirty.
• "Lesser Dog has gone where no dog has gone before." ^ExplanationThe Lesser Dog's telescopic neck has become quite famous. Sometimes the Lesser Dog is depicted extending off the computer via strips of appropriately-sized paper.
  • "It's possible that you may have a problem." ^ExplanationThe game's reaction when you refuse to stop petting Lesser Dog. It will be quoted whenever fanart of it is shown.
• ♥ Flirt ^ExplanationDespite being a kid, Frisk may flirt with several of the monsters, including the motherly figure Toriel and even Papyrus. In response to that, Frisk is often depicted as a Lovable Sex Maniac, flirting especially with those who are trying to kill them or beat them up.
• Suggesting a Genocide run of other games, usually games like Animal Crossing or Neko Atsume that don't even have combat.
• "But nobody came." ^ExplanationThe quote used when you kill all of the enemies in an area, as well as the name of the song that plays when in such an area. It's referenced several other times within the game as well. For fans, it's often used to convey serious/dark situations.
• Why Undertale is shitty and why all of you are shitty for liking it ^ExplanationThe header of an infamous post declaring that Undertale was racist, sexist, etc. It quickly started drama and was roundly mocked, with various posts copying the header only to have something nonsensical underneath (such as an unrelated picture, or complaining about the lack of wavedashing).
• Undertale is an SJW game because [hilariously trivial reason]. ^ExplanationThe detractors on the other side of the political spectrum are fond of making serious claims that Undertale is somehow pushing an agenda of Political Overcorrectness. Naturally, parodic responses ensue.
• Does spider have pusspuss? ^ExplanationThis quote actually originated years before Undertale, in a hilariously random Google Ask topic, which was immortalized in a fairly popular video. The quote is now enjoying a new surge of popularity in relation to Muffet, especially since, as a Cute Monster Girl, she is a common target for Rule 34.
• Magical glass ^explanationAfter Toby tweeted about some rather Hand Wavey fixes for a bug where the player can walk out of bounds during the Undyne fight (with Undyne generating a glass floor beneath her feet to follow them), any Plot Hole (especially trivial ones) will have someone come up with an explanation involving magical glass.
• Toby Fox is either really lazy or a fucking genius / Toby Fox is a brilliant composer... or lazy^ExplanationMost songs in the game's soundtrack share musical phrases with one another, with some being different arrangements of the exact same song. As such, fans have described Toby as both lazy for re-using so many melodies and as a genius for being able to do this so well, given how subtle some of these recyclings are and what their significance is in each song. A few fans also joke that he was too lazy to make something interesting with certain areas, those areas being the useless show rooms of Mettaton during the Genocide run.
• Suggesting that Gaster was pushed into the CORE for a trivially petty reason.^ExplanationCanonically, we don't know how or why Gaster fell into the CORE and became Ret-Gone, so speculation runs rampant. And as with all subjects of wild speculation, joke theories such as "Alphys pushed him because he liked Mew Mew Kissy Cutie 2" pop up occasionally.
  • Alternatively, some people joke that he wasn't actually pushed in at all, but just abandoned Sans and Papyrus for some reason. Common variations include him going to buy milk and disappearing and him leaving to start an emo band with the secret bosses of Deltarune.
• Murder Dance ^ExplanationNickname given to a technique of walking back and forth in place against the top wall of a room to speed up random encounters because of a quirk in how they are triggered in Game Maker.
• What about the X version? ^ExplanationAfter the announcement of the game on Xbox One, many comments (following a joke in the video itself mentioning it is the fifth port since its original release) made jokes about the game being ported on many other machines, some even comparing it to Doom which has the reputation to run on supports not planned for gaming in the first place.
• Undertale is now responsible for my gambling addiction. ^ExplanationThe Xbox One port replaced the abandoned Dog Shrine where Mad Mew Mew used to hide with a casino. Naturally, many comments joked about the game supposedly promoting gambling and their need to buy yet another version only for a plot-irrelevant minigame.
• "Long Elevator" is the best song in the game.^ExplanationThe transition between the Core and New Home is an 18 second-long elevator ride, during which there is absolutely nothing except the sound of the elevator moving. The "music" of this sequence was included on the official soundtrack as a joke. If you ask any Undertale fans what the best song in the game is, someone will almost always give "Long Elevator" as a joke answer.
• Foam Shower ^ExplanationFor the Undertale/Deltarune Newsletter on April 1, 2023, Toby Fox randomly sent multiple photo of himself in swim trunks covered in foam to 1,000 random subscribers, claiming that they were accidentally added to the "Foam Shower" tier. This image received many edits and memes due to its bizarre nature.
• Playing "Once Upon a Time" over footage of characters from unrelated media falling into pits, as a reference to the opening sequence.

Fan Works / Fandom

Of course, being fan-made doesn't mean you aren't a meme.

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• Turning songs into crappy MIDIs (often accompanied by a GIF of a related character banging on a piano) or playing them with the Temmie Village soundfont.^ExplanationThe former is somewhat of a carryover from Vinesauce Joel, a noted Fandom VIP of Undertale who got into the game from streaming a blind playthrough of all 3 routes. Joel had previously pioneered the "Crappy MIDIs" meme in his "Windows 8 Destruction" livestream after converting "The Time is Now" into a MIDI file and getting a track consisting of what can best be described as piano gibberish. Since Joel's fans tend to connect him with Undertale, the crappy MIDIs meme has carried over into the latter's community.
  • The aforementioned Dogsong is also seeing a lot of use in the same trend. And then there's putting Temmie's face on various characters.
• Long ago, two races ruled over Earth: Wazowskis and Doras.^ExplanationAfter Flowey takes over the game, the title screen changes the goat-like monster to a Loox, whose appearance is similar to Mike Wazowski: while this similarity was observed by many, the most famous may be from Sr. Pelo. The humans' (both the one of the title screen and the controllable Human Child) comparison with Dora the Explorer doesn't limit itself to this sentence, however.
  • Don't touch the Child! ^Explanation from the ending of Underpants' true ending, where Toriel, a Royal Guard, and then all the monsters beat up Flowey (and later Asgore) for hurting Frisk. It's spawned a ton of fan animations featuring different characters from various media.
• "Booby." ^ExplanationOne particular comic◊ by Phillip Bankss has the protagonist asking Toriel where they can access the Internet in her home. Toriel then has a vision of the protagonist Google-searching "booby" with a coy smile, before she states that Internet access is "foreboden" in her home. In fact, most art states that any mention of the word around Toriel might garner a reaction like this◊. Expect to see any mention of "booby" being followed by "FOREBODEN".
  • The "boden scale". ^ExplanationMostly on Reddit, this is a ranking of just how NSFW something is, with regular Rule 34 being foreboden, kinda-suggestive stuff being "threeboden" or less, and the really weird stuff being "fiveboden" or more.
• yee haw ^ExplanationComes from a post on the Undertale subreddit speculating what it would be like if Frisk responded to everything by just saying "yee haw" in all lowercase with no punctuation. This meme is pretty popular on the subreddit, and often leads to long strings of yee haws for no discernible reason. It has also been associated with the Yellow SOUL due to them owning a cowboy hat and antique gun.
• As mentioned a bit above, Toby Fox being called a troll (based on his Teasing Creator and Trolling Creator tendencies) and a "shitty dog" (from one of his own Twitter posts). His ability to think of anything a player would try has also reached memetic levels.
• People have started trying to find many of the secrets that are in this game. However, as people started going through the soundtrack, they realized that most of the soundtrack is mostly the same song, except it's being played at different speeds/tempos. Now, this is more obvious with songs such as "Power of NEO" being a remix of "Battle Against a True Hero" or "Ghost Fight" having connections to Mad Dummy's and Muffet's theme with repeating reprisals. But then if you play a song such as Waterfall's theme, 8 times its regular speed, it becomes strikingly similar to "NGAHHH"/"Spear of Justice." These revelations are quite memetic.
  • This has also led to the joke that the entire soundtrack is comprised of one song remixed over and over.
  • Taken to insane levels with the revelation that the song "But Nobody Came" is Flowey's intro theme slowed down by 1200 percent.
  • Now with a full leitmotif map.
• Using the characters' Voice Grunting to cover Vocaloid songs.
• Text posts reading "[NSFW] (lengthy description of a character doing something mundane)" ^ExplanationCame about after certain... very kinky voice clips rose to prominence.
• "my last wish for undertale is that when discussion of it fades it dies peacefully instead of morphing into a garbage cesspool" ^ExplanationA Twitter message from Toby Fox himself, made a short time after the game's release, warning against Fan Dumb. The fandom has not forgotten this, and it's brought up whenever the weirder/more hostile parts of the fandom present themselves.
• "You can't do the roasty toasty shitty posty?"^ExplanationAn edited pic of Undyne saying this, posted in response to unoriginal trolling.
• temmie get money ^ExplanationThe phrase comes from this video combining the Tem Shop theme with Whales by Hail Mary Malon, tying into the Temmie shop owner's desperate need for cash to go to college (or "cool leg" as she puts it), as well as the ridiculously high price for the Temmie Armor before you figure out how to lower it.
• MatPat gives the Pope Undertale. ^ExplanationMatPat from Game Theory was invited to meet Pope Francis along with many other YouTubers to discuss how the internet can bring people together. As it is customary to bring the Pope a gift when meeting him, he wanted to give him something symbolic of the gamer community. What did he give him? A Steam code for Undertale. The utter ridiculousness of the situation turned it into a meme within hours of the video being uploaded.
  • The Pope finally played Undertale.^ExplanationOn January 6, 2022, one of the performances at Pope Francis' General Audience was a jazz rendition of Megalovania. It blew up immediately for the sheer unexpectedness of it, with people believing that he finally got around to playing that copy of Undertale.
• Timing. ^ExplanationThis one originated on the Steam forums for Undertale, where an "art" post is made by a screenshot of two other art pieces (randomly) placed astoundingly appropriately together. Case in point.
• -_- ^ExplanationA smiley used to represent the game's blank-faced protagonist in too many forums and comment sections to count.
  • =) ^ExplanationConversely, this smiley is used to represent Chara's smile, or the Genocide Run in general.
• I'm Gonna Fuck the Skeleton/Don't Fuck the Skeleton/You Can't Fuck a Skeleton ^Explanation Many fans draw Rule 34 of Sans and Papyrus. However, unlike Toriel, they most likely wouldn't have the organs to do any of that stuff.
  • Lightsaber penises/Glowing tongues. ^ExplanationOne way of Hand-Waving the lack of sexual organs that Sans and Papyrus have is to give them magical "equipment". Since it's magical, it has to be glowing blue (Sans) or orange (Papyrus), and thus the connection to lightsabers was made. Of course, tongues were also thrown into this so the brothers can kiss.
• Chisk/You are filled with DISCOMFORT ^ExplanationCreated by tumblr user SpacialFries and made famous by the infamous Games Repainted stream of Undertale. The player character's sprites were edited to resemble a combination of Frisk and Chara, resulting in a pale Frisk in a green jumper and an open-eyed, neutral expression. The "determination" messages in the game were all swapped with "discomfort" and those who draw Chisk tend to portray them as a nervous wreck. Quite fitting, considering the sheer Mind Screw that is Undertale Repainted. Becomes Hilarious in Hindsight when Deltarune features a Composite Character between Frisk and Chara in the form of Kris.
• The Undertale Multiverse ^ExplanationSeveral Alternate Universe versions of the characters and setting have grown vastly popular, to the point of creating a shared multiverse among the fandom. Some examples include "Underfell", a Darker and Edgier story where the fallen child and a good Flowey try to survive encountering all of the villainous monsters of a land where it really is kill or be killed, and "Underswap", where several characters swap personality traits with each other, such as Sans being the energetic one and Papyrus being the lazy one. There is plenty of crossover between these universes.
• "Underfell ______" ^ExplanationMuch as "Sadstuck" was repurposed as an all-purpose term for any Tear Jerker-type Fan Fic, "Underfell" has become an universal adjective for Darker and Edgier AU versions of characters, even those with nothing to do with Undertale. Usually used in a sarcastic sense.
• "Fuck. Please, we've been good"/Tootsie rolls ^ExplanationA notorious borderline-NSFW fanart of a fetishistically Off-Model Sans and his Underfell counterpart kneeling in front of the viewer with their tongues out and leashes around their necks, as well as the popular Bowdlerized edit that photoshops a crude 3D hand offering Tootsie rolls. Often used to mock how over-the-top the Perverse Sexual Lust side of Sans fandom can get, as such fanart can quickly get very Squicky to others.
• "HUG THE GOAT!" ^ExplanationDuring the Awesome Games Done Quick 2017 playthrough, a Crowd Chant erupted during a certain scene... may also count as a Heartwarming Moment, given that the total donations went over $2.2 million at that very moment.
• Jaspertale. ^ExplanationThe Season 3 premiere of Steven Universe ended with major antagonist Jasper defeated, but falling into a fault canyon instead of getting captured by the Gems (essentially Put on a Bus) due to a Diabolus ex Machina. So naturally, many fans of both works decided that she must have fallen into the Underground.
• #MADMEWMEWFOR[insert popular AU name here] ^Explanation With the release of Undertale for Switch, and people quickly learning of the new Easter-egg boss Mad Mew Mew, people started phrasing this, wanting Mad Mew Mew in AUs such as Glitchtale and Underverse.
• [Song] but extended by an AI ^Explanation A neural net was recently developed that composes songs based on an existing snippet. Naturally, in the vein of the "Making Megalovania sound bad" meme, people started feeding it songs from the game, and much like the previously mentioned meme, people say that it's impossible to foul up Undertale's soundtrack even when the "remix" is completely random.
• The final two panels of this comic is a common reaction image to any Visual Pun or Stealth Pun that requires a moment to process. Especially LOSS.jpg.
• Prunsel.^ExplanationA fan character of sorts originating from this tumblr post. The poster had a dream where Papyrus was replaced by a giant realistic Faceless Eye staring directly at the viewer, who "spoke" with an ominous red glow that caused the music to cut out. The fandom quickly became enamored with Prunsel due to how creepy yet absurd it was, and began making fanart and shitposts about it. It was an especially big hit on the "r/Undertale" subreddit, with the users treating it as if it were an official character.
• Do not let your children around THE GOAT. ^ExplanationA (most likely joking) review of Undertale, which claims that the game is turning children into gay furries who "will vote radical furries into office", and blames it on "THE GOAT" (Toriel). This review, especially the part about THE GOAT, became a joke in the fandom due to its absurd claims.
• How was the fall? ^ExplanationA parody of a popular fanmade song "To the Bone", where all of Sans' lines are replaced by his first line, "How was the fall?" It's pretty much the Undertale fandom's version of "Crawling in my Crawl" or "Seven foot rat, rats along his rats".
  • How are your balls? ^ExplanationAnother parody of "To the Bone", this time with Sans singing about taking Frisk's testes.
  • Womp womp womp! LEAVE ME ALONE! You know I've got a knack, for the trom-bone! ONE MORE PUN, AND I'LL BE DONE! But ain't two skulls, better than one?^note Sans playing the trombone in the same song, and Papyrus becoming enraged at it and Sans' subsequent puns have been edited to make Papyrus' shouting louder following his energetically angry reactions in the remastered version animated by Coda.
• Wooooooaaaah oooh ooooooooh, Story of Undertale ^ExplanationA parody of Lady Gaga's "Bad Romance" known as "Undertale the Musical" (usually called "Story of Undertale" to avoid confusion with Man on the Internet's Undertale the Musical) has gained severe infamy among the fandom for its low quality—the Off-Model animation, copious amounts of Autotune, disturbingly out-of-place lyrics, and inaccuracies to the game all make it prime material for riffing.
  • I'm having a bad, bad day, it's about time that I get my way...^ExplanationA recreation of a scene where Chara tells Frisk to do the Genocide route from the same animation, except with the song Despicable Me from the movie of the same name. The meme format is often used as a person trying to hypnotize someone else into doing something.
• Hello everyone! It is me, The Great Papyrus, and I'm going to be teaching you how to cook some amazing frozen hotdogs. HOLY SHI- ^ExplanationA video of a prop skeleton wearing Papyrus's clothes promising the viewers that he'll teach them how to make frozen hotdogs, opening a fridge only for its contents to spill out. It's gained some popularity on several video-sharing sites such as TikTok and Discord.
• SANS, I JUST SNORTED A SUITCASE FULL OF COKE, AND I'M STARTING TO FEEL THE EFFECTS ^ExplanationThis originated as a video by UrnixFAK with a voiced Roblox screenshot of Papyrus telling Sans the above line. The line has been animated many times on Youtube.
• The almighty Merg. ^ExplanationThe YouTuber Merg is somewhat of a Memetic Badass in the fandom for his many no-hit runs of Undertale and Deltarune bosses and fangames. Thus, it's a common joke to portray him as The Dreaded towards Undertale characters who can turn any Nintendo Hard Bullet Hell boss into a Zero-Effort Boss.
• SOMEONE SHOULD FUCKING KILL YOU ^ExplanationA quote from Papyrus from AITale, a mod by CiblesGD where all the dialogue has been generated by AI, used as a reaction image.
• Baby Bones ^ExplanationA post on Undertale's subreddit showed an image from the game of Sans saying that Junior Jumble is for "baby bones", with the poster misinterpreting this line and asking if a character named Baby Bones is a third skeleton brother. This has led to many other posts about Baby Bones (mostly involving jokes about what his nonexistent character is like in the game, from sprites to how to fight him) or other posts wildly misinterpreting out of context lines from the game.
• shut up loser ☝︎✌︎💧︎❄︎☜︎☼︎ 👌︎☹︎✌︎💧︎❄︎ (GASTER BLAST) ^ExplanationA reaction image with Gaster based on the Biden Blast meme that started getting spread in 2023.
• "human... i remember you're genocides." ^ExplanationAn edit of Sans's first encounter where he says this line, parodying low-quality fan content and creepypastas involving the Genocide route. This spawned numerous similar edits of both this game and Deltarune, including two variations of the Sans edit corresponding to the other routes in the game.
• Toriel blocks the fucking way!/INCREDIBLE!! YOU SLIPPERY SLUT!! ^ExplanationTwo screenshots from a satirical Underfell fangame, which are often used as examples of edgy and unnecessarily profane fan content, and used in memes.
  • BAE blocks the BLESSED way! ^Explanation An edited version of the "Toriel blocks the fucking way!" image, censoring the swears with words that are more family friendly, albeit in a comedic way.
• "Babygirl? Daddy's home."^ExplanationA satire video of Sans drawn poorly, with him taking his shirt off and gaining lipstick as soon as he does. This spawned an FNF mod of this video, and led to many recreations of the video.
• I'm Wing Gaster! The royal scientist.^ExplanationAn edited version of a scene from the fangame Undertale: Battle Mode where Gaster says the above line before his fight, combined with the scene after the fight where Chara pushes him into the CORE. This edit is abrupt to the point of absurdity, having led many fans not familiar with the fangame to believe that this is the original version. Not helped by the awkward-looking sprites, it has been used in many memes about Gaster, with some fans treating Wing Gaster as an entirely separate character.
• I'M NOT FALLING FOR THAT SHIT! ^ExplanationA screenshot from the creepypasta Scratch game Papyrus Goes Too Far of Papyrus saying this line when Sans tries to convince him not to kill him. Due to the humor of it being very out of character for him, it's used as a reaction image, most commonly in response to fake news/leaks about Undertale and Deltarune.

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GAME
OVER

geeettttttt
memed on!!!!

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