History Funny / Undertale

* Once Toriel gives you a cell phone, you have a few topics to call her up about. If you choose the "Call her 'mom'" option and then choose the "Flirt" option, she will take note of this and call you an [[OedipusComplex "interesting child."]]

'''Mettaton:''' [[AC: ...A substitution? You mean, use a different, non-human ingredient?]]\\

** Inputting "Metta" or "Mett" will get this reaction.

* For the final question, Mettaton decides to ask something Alphys would never give you the answer to: Who does she have a crush on? You can pick the correct answers (Undyne or Asgore) or you can pick ''yourself''. The bewildered look and shaking in rage/confusion Alphys gives you is almost worth the embarrassment.

* When Undyne introduces herself, she starts talking exposition, only to just go "Screw it" and start boasting that it doesn't mean squat since she's going to kill you, her boss music even plays in sync with the text. This will only happen if you're doing a pacifist run, or on a neutral run where you haven't killed Papyrus.

** The BGM for Mettaton's cooking show and one of the hallways of MTT Resort is named "[[LongTitle Can You Really Call This A Hotel, I Didn't Receive A Mint On My Pillow Or Anything]]".

* In one of the Undertale News Letters, Toby revealed that he had originally planned to implement a feature for [[{{Troll}} messing with speedrunners]] -- namely a minute long, unskippable cutscene of [[https://www.youtube.com/watch?v=phOsFLw4L88 Sans slowly eating an ice cream cone]], with purposefully grating circus-like music playing over top.

** Monster Kid's stats are 2 ATK and 2 DEF. That means he has the lowest stats out of anyone in the game... except for [[ThatOneBoss ''Sans'']], who has even lower at 1 ATK and 1 DEF.

** If you don't move[[the solution to the puzzle requires you to step on a green tile[[/note]] and let the timer run out, Mettaton starts on his usual explanation of what the tiles do before realizing you never stepped on a green tile, and therefore aren't required to fight him.

!!Moments pages are ''spoilers off''. Read with caution!

** Heck, Toriel arriving by blasting Asgore off screen just like she did to Flowey.

*** Choosing the soda will prompt dialogue from Undyne where she says that she doesn't like soda becuse it rots your fighting spirit, but when asked why she even has it in the first place, her expression either implies that she drinks it anyway or that the stuff inside isn't soda.

** You can receive this call even after killing Undyne, making it either a FunnyAneurysmMoment or [[BlackComedy even funnier]], depending on how you look at it.

* The next puzzle supposed to stop the hero, designed by [[TheSlacker Sans]], is... just a word search puzzle left on the floor; you can walk past without even looking at it, infuriating Papyrus. If you do stop to look at it, you can see that alongside season names and monster species, there are words like "cigars", "[[NamesTheSame cig]]", "[[ThemeNaming hot]]", and "[[PerfectlyCromulentWord giasfclfebrehber]]", a 16-letter nonsense word that's one letter off from the entire first row of the word search; even funnier, it still does nothing to stop you from walking right past it.

* Another [[MoodWhiplash rare couple moments]] of humor along the No Mercy path comes when you reach New Home, right before things take a turn for the absolute worst. While at Toriel's house, visiting the kitchen can prompt red text to chillingly demand "[[red:Where are the knives.]]" [[BrickJoke Equipping the Real Knife gives text reading "About time." Looking in ASGORE's fridge prompts the similar red text to declare "No chocolate." Is the Fallen Child craving sweets?]]

** Sans is a [[ThatOneBoss pretty hard boss. When you walk up to a rematch, he'll make fun of you:]]

''that's the expression of somebody who's died [[PerfectlyCromulentWord quice in a row. quice? frice? welp, won't have to use it again anyways.]]''\\

''that's the expression of someone who's died six times in a row. that's the number of fingers on a [[BrickJoke mutant hand. you'll need to find a mutant hand with even more fingers.]]''\\
''that's the expression of someone who's died seven times in a row. hey, that's good. [[LuckySeven seven's supposed to be a lucky number. who knows, maybe you'll hit the jackpot... and that number will multiply tenfold.]]''\\

** The boss's special attack, which they precede with "Here goes nothing." "yep. that's right. it's [[ExactWords literally nothing."]]

** There's a bed you can sleep in. If you choose to use it, an Amalgamate shaped like a ''sperm'' appears, and then...tucks you into bed, pats you on the head, and leaves. Even a monster used in a Determination experiment gone wrong is courteous enough to help you sleep peacefully!

** Heck, Toriel arriving by blasting Asgore off screen just like she did Flowey.

--->'''Mettaton EX:''' [[AC: Oh my god!! Will you two just '''smooch''' already!? The audience is dying for some romantic action!!!]] \\

'''Sans''': :D\\

'''Undyne''': ?????????? Well??? Uh??? I guess??? If you want to??? Then??? DON'T HOLD ANYTHING BACK!\\

'''Toriel''': W-wait! Not in front of the human!

'''Asgore''': Boy! Technology sure is something, isn't it?

** A slight alteration. If you kill every boss except Papyrus, Sans explains that the monsters were in such need of a leader that Papyrus was chosen to lead the underground. Papyrus takes over the call and says that ruling is awesome, even if he does miss his friends. (Maybe they're just on vacation).

* After spending the whole game unable to get into Sans' room, the player is finally able to receive the key from Sans personally (which he hands to you while telling you "it's time you learned the truth...") during a Pacifist run, but only after pulling some [[GuideDangIt seriously obtuse stunts]] involving constantly reloading the game (and passing along embarrassing {{Trust Password}}s like "I'm the legendary fartmaster") right after you receive judgement. Once they get inside, they're greeted to a pitch-black room with ominous sounds, and after wandering around for a while as the tension builds, Papyrus turns the light on and reveals that the player's been walking around on a treadmill in a perfectly ordinary room (well, aside from the self-sustaining trash tornado in the corner.)

-->'''Mettaton:''' [[AC:...seriously? My, my. How conceited can you get? [[ActuallyPrettyFunny I love it]]! And while you are completely wrong, you deserve some credit. I've seen her watch you on her computer screen. Smiling when you succeed. Shrieking when you fail. And always, always whispering, "No! Wrong! You have to go that way!" In its own way, is that not love??]]

** If you don't move and let the timer run out, Mettaton starts on his usual explanation of what the tiles do before realizing you never stepped on a green tile, and therefore aren't required to fight him.

---->'''Mettaton''': [[AC:Oooh! Oooooooh! You defeated me! How can this be, you were stronger than I thought, etc. Whatever.]] ''([[ScrewThisImOuttaHere pisses off]])''

* Attempting to sell something to Burgerpants before befriending him results in his smile becoming extremely strained and his sprite shaking violently as the text "(WHY IS THIS PERSON TRYING TO SELL ME SOMETHING THIS IS A HAMBURGER RESTAURANT I'M JUST TRYING TO SURVIVE)". The parenthesis indicate that he's holding his incredulousness in to avoid a reprimanding from Mettaton, however if you attempt to do this again he throws caution to the wind and shouts "WHO DO YOU THINK YOU ARE".

-->'''Burgerpants:''' Sorry, little weirdo, threats won't work on me. I can't go to hell. I'm all out of vacation days.

** If you examine the oven in the corner of his kitchen, you'll notice that he forgot to pre-heat it. Of course, since this is a cooking ''show'' Mettaton [[OneIPreparedEarlier already had a cake made in advance.]]
** When Alphys calls right as Mettaton is about to remove the human's soul (with a ''chainsaw''):

** This scene, among others in Hotland, becomes even funnier in hindsight, after you find out that Alphys and Mettaton are working together. There are several moments where you can practically see Mettaton thinking, "Why in God's name did I agree to this?", and/or getting frustrated with Alphys for botching her lines. In particular, "...Vegan." comes off as Mettaton exasperatedly wondering if ''that's'' really the best she could come up with.

* When you reach the area where Mettaton is giving a news report, you can walk around and examine items in the room, only to learn that the item you just picked up is, in fact, a bomb. Mettaton then tears down the walls around him to reveal that all of the other objects you didn't examine are ''also'' bombs -- the present, the basketball, [[StealthPun the script for his newest movie]], the ''Annoying Dog''...even the words in his speech bubble!

* During the battle with Mettaton EX, you may occasionally get text that just says "Mettaton." to start off the round, as if even the game doesn't know how to process what's going on. Another possibility is "Smells like Mettaton."

* Also on the No Mercy route, after the awe-inspiring hell of Undyne the Undying, the boss fight against Mettaton NEO is... hilariously {{anticlima|xBoss}}ctic, especially since he gets a menacing-looking new form, theme music [[RecurringRiff drawing similarity to Undyne the Undying's theme]], and builds up his human-killing capabilities, only to [[OneHitKill die in a single hit]]. And not just any one-hit kill: he takes at least ''[[ThereIsNoKillLikeOverkill 900,000 HP]]'' of damage, the most of any hit in this route up to this point.

* "Dating" Papyrus. You get to poke around his house (which is full of funny lines in and of itself) but the best part is getting to engage in a "battle" with Papyrus in which you prove to be the ultimate dater.

** Quickly walk in and out of the kitchen in the skeleton brothers' house. Since Papyrus follows you as you go in/out, he'll be walking back and forth. After a while you'll hear a "ping" noise every time he changes direction. Talk to him, and he'll mention that being a good host is a workout. Keep walking back and forth until the sound changes, talk to him again, and he'll tell you that he can't feel his legs...which must mean that he's a great host.

--->'''Mettaton''': "They left!? Why!?" I asked, dying dramatically.

--->'''Flowey''': [[ChristmasInJuly September]]. DID NOBODY NOTICE IT WAS SEPTEMBER???

-->'''Flowey''': You know what's going on here, don't you? You just wanted to see me suffer.

-->'''Flowey''': Hey. Remember. DON'T kill anyone. [[ICantBelieveImSayingThis ...I can't believe this is a REAL thing I have to remind you.]] Good luck!

* Just try petting Lesser Dog. Pet it as much as possible. Its head keeps stretching out each time you do.

** When the response reaches "Critical pet! Dog excitement increased.", it stops attacking. But that shouldn't stop you from petting it. Eventually, its head goes off-screen. Keep petting, and its head reappears to stretch back down, passing through its speech bubble and the menu interface, off the bottom of the screen. While you're doing this, you get several humorous messages about [[WhatTheHellPlayer the game questioning your decision to pet it so much. When Lesser Dog's head goes behind the dialog box, the game states that it's learning how to read.]]

* When Papyrus sees you for the first time on the Pacifist Route...or, perhaps...not:

* The earliest "puzzle" of Papyrus' is an electrified, invisible maze. When you take a step into it, ''Papyrus'' promptly gets electrocuted, causing him to throw a tantrum with Sans grinning. He's then told to [[EpicFail give the electricity orb to you, so he walks through the maze, leaving footprints to show the way once you get it]].

* On No Mercy, the Fallen Child's ''[[PragmaticVillainy willing to spare Jerry from the battle's start]]'', which implies that even ''they'' think that Jerry's a greater evil and it'd be more worth it to let him run around. The other implication is that even they don't want to deal with him long enough to kill him. You'll also notice that killing Jerry doesn't decrease the remaining monster counter that you see at save points.

* Lose to Papyrus in a fight and he'll lock you in their garage while waiting for Undyne to show up, saying you're in the doghouse now... upon waking up, you can find a note from him saying to make yourself at home and that he's provided accommodations and refreshments. All that's in there is an old dog bed, a bowl of dry dog kibble, and a squeaky bone. The door is also locked...from the inside. Papyrus is literally treating you like a dog, possibly because he has no idea how to handle a human in the first place. Lose to him again, and he promises to make the room so nice that you won't want even to escape. He does this by... cutting up a hot dog into the kibble. Given how he has to deal with the Annoying Dog, this explains so much.

* If you abandon a No Mercy run at Papyrus and go hang out with him, he'll start talking about how he was ready to use his special attack on you as a last resort, only to examine the box and notice [[BrickJoke his special attack's nowhere in sight.]]

'''Aaron:''' THESE ARE WINKS OF FEAR ; )

** One Temmie asks you if you're allergic to them. She then says she understands as she's allergic to them as well. [[PuffOfLogic Cue her face swelling up]] (all the while the music stopping to emphasize this fact).

*** Even better, in the PlayableEpilogue this is the ''only'' line in Temmie Village that's unchanged.

** During the chase, you'll eventually pass through a sleeping Sans on his booth. Undyne will actually stop chasing you briefly just to turn to and stare at Sans, no doubt angry that he's slacking off on his job. She'll even comment on it if you were to phone her within this area.

* When Undyne introduces herself, she starts talking exposition, only to just go "Screw it" and start boasting that it doesn't mean squat since she's going to kill you, her boss music even plays in sync with the text. This will only happen if you're doing a pacifist run, or on a neutral run where you haven't killed Papyrus..

** Would it be safe to say that Papyrus [[IncrediblyLamePun left a walkthrough for it]]?

* One of Sans and Papyrus' puzzles that are supposed to stop the hero is just a word search puzzle left on the floor. You can walk past without even looking at it, infuriating Papyrus. If you do stop to look at it, one of the words is a 16-letter nonsense word that's one letter off from the entire first row of the word search. And it still does nothing to stop you from walking right past it. Occasionally, the word search will feature an additional character named "Nightmare"... who's just [[DeathbringerTheAdorable a snowman with Ice-E's face on it.]]
** Another puzzle after that is a randomly-generated tile maze with a ridiculously huge number of tile types with all kinds of different functions and interactions with each other. Once Papyrus activates the maze to shuffle it, the tiles start flashing dramatically until they form a straight line to the exit. Even better, he doesn't say anything when this happens, he just stares at it in StunnedSilence for a second before slowly spinning out of the room.

*** What's even funnier is that the note he angrily leaves you with the puzzle instructions. Which has chicken-scratch all over it. It's later revealed that it wasn't even his handwriting; rather, Alphys wrote it herself and apparently gave it to Papyrus to work the puzzle. ''No wonder he got confused!''

-->"What? No, you can't get a second key!"

** If you choose to do a [[KillEmAll Genocide Run]] on hard mode, looking in the mirror gives you [[PlayerPunch "It's me, (Character Name)"]] instead of "It's you" much like in the game proper. However, since you have to name your character "Frisk" to get this playthrough started, which is something that you'd ''only'' know if you did True Pacifist (or looked [[ItWasHisSled literally anywhere online]]), that means you get the surreal gem that is [[ARareSentence "It's me, Frisk."]]

* In 2022, a [[https://twitter.com/sexymanOTD Twitter account]] held a vote for the title of Ultimate Tumblr Sexyman involving all characters ever given such a dubious moniker. Sans, of course, made it all the way to the finals and was confronted with Reigen from ''WebComic/MobPsycho100'' of all characters. After Sans won by a very small margin, [[MemeAcknowledgement Toby chimed in]] with ''[[https://twitter.com/tobyfox/status/1567739718762364929 an entire short fanfic]]'' about how it went down, with Sans winning by a single vote from Reigen's pupil Mob because it's an award for unatractive people and the boy wanted Reigen to have confidence in himself. The initials of the paragraphs in the story are an anagram of "HEROISM" for some reason.

* In 2022, a [[https://twitter.com/sexymanOTD Twitter account]] held a vote for the title of Ultimate Tumblr Sexyman involving all characters ever given such a dubious moniker. Sans, of course, made it all the way to the finals and was confronted with Reigen from ''WebComic/MobPsycho100'' of all characters. After Sans won by a very small margin, [[MemeAcknowledgement Toby chimed in]] with ''[[https://twitter.com/tobyfox/status/1567739718762364929 an entire short fanfic]]'' about how it went down, with Sans winning by a single vote from Reigen's pupil Mob because it's an award for unatractive people and the boy wanted Reigen to have confidence in himself. The paragraphs in the story are an anagram of "HEROISM" for some reason.