->"What is this powerful new juice coursing through my core source? The juice aches. Is this the rumored ache of feeling? The feeling of caring unknown to lemons?"
-->-- '''Lemonjon''', ''WesternAnimation/AdventureTime''

[[quoteright:258:[[Webcomic/PennyArcade http://static.tvtropes.org/pmwiki/pub/images/joy.JPG]]]]
[[caption-width-right:258:[[VideoGame/OdinSphere It took planting fruit that eats souls, which can be eaten for his HP to gain XP, in a 2D sidescrolling RPG brawler set in a book for this to occur.]]]]

So you have a character who's usually defined by a certain mood. Maybe they're always [[TheStoic calm and inexpressive]], or [[GenkiGirl cheery and upbeat]], or [[HairTriggerTemper brimming with rage]], or [[TheEeyore moping]]; whatever it is, this mood defines them to the audience and the cast. But every once in a while the planets align and something happens that brings this person a momentary change of heart. This can come as a shock to the audience, the rest of the cast, and sometimes even the character himself! They were so used to their normal state of mind and they're not sure what's going on when that smile starts to spread across their face or their eye starts to twitch in that odd way. They can only ask - "[[TitleDrop What is this feeling?]]"

Bound to happen at least once to any EmotionlessGirl and in the DefrostingIceQueen scenario.

For specific types of feelings that can evoke this, see WhatIsThisThingYouCallLove, and IsThisWhatAngerFeelsLike.

Compare NotSoStoic.
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!!Examples:


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[[folder:Anime]]

* Light in Manga/DeathNote is always very confident and powerful. However, [[spoiler: when Near first calls him and says "call me N",]] Light is shocked that he is deathly afraid and has a fantasy where he is still [[spoiler:handcuffed to L]].
* Checkmate from ''UltimateMuscle'' was trained by [[BigBad Sunshine]] not to feel pain. He experiences an odd sensation after his opponent attacks his knee for an entire episode, at which point Sunshine is forced to reveal that he only ''thinks'' he can't feel pain.
* Something of a regular plot point in ''DarkerThanBlack'', as it's assumed by everybody (including [[TinMan Contractors themselves]]) that Contractors are inherently [[LackOfEmpathy unemotional, selfish, and amoral]]. When those pesky emotions ''do'' finally show up, [[NotSoStoic most aren't exactly sure what to do with them]].
* In ''LightNovel/FullMetalPanic'', Sousuke's whole HeroicBSOD during TSR. Pretty much everyone was shocked and surprised at how depressed [[TheStoic he of all people]] became when he was split up from Kaname. Mao is shown to especially be exasperated with him when he [[TheAce uncharacteristically]] almost gets them killed because he's so out of it.
** In ''Always Stand by Me'', Sousuke is a bit unnerved to discover that his mecha's AI has apparently developed the capacity for ''survivor's guilt''.
* Warrior race Zentradi in ''{{Macross}}'' feel strange when confronted with ''culture''.
* Towards the end of ''{{Simoun}}'', the following dialogue takes place:
--> [[spoiler:'''Aaeru''']]: What have you done to me?! Why does my heart hurt so much?
--> [[spoiler:'''Neviril''']]: This is love.
* Happened to [[SuzumiyaHaruhi Haruhi Suzumiya]], after she helped the schoolband ENOZ out. They were very grateful but Haruhi didn't really know to handle it and becomes sort of melancholic. Kyon then figures that it is because she's not used to being thanked by other people.
* Mytho from ''Anime/PrincessTutu'' asks this question constantly throughout the series. It makes sense, because he shattered his heart (and thus lost his emotions) to seal away the evil Raven, and slowly regains emotions with each piece of his heart he is given by the title character.
* [[EmotionlessGirl Ren]] of ''ElementalGelade'' has to be taught jealousy. It works!
* In [[LightNovel/YahariOreNoSeishunLoveComeWaMachigatteiru Oregairu]], [[FriendlessBackground Hachiman]] [[TheCynic Hikigaya]] once, so far, wished to befriend [[IceQueen Yukino Yukinoshita]]. There is a good chance he hadn't wanted anyone specific to be his friend for years. However his feelings were promptly crushed - courtesy of Yukino.
* Horribly {{Deconstructed}} in ''FateZero''. Kotomine Kirei has been trying to find something that can give him true happiness for years. Despite being a priest, he doesn't find it in doing good. Despite being TheAce, he feels no pride. Despite being a married man, he doesn't find it in... you know[[note]]His wife eventually commit suicide, which makes his only daughter thoroughly hates him. He doesn't see it as a loss[[/note]]. He finally finds something that makes him feels, it being being ''absolutely evil''.
--> '''Gilgamesh''': Rejoice!
* In one ''Manga/FistOfTheNorthStar'' OVA, Raoh feels a strange trembling in his body when he fights Kenshiro, who has recently discovered the secret of the [[SuperMode Musou Tensei]] technique. Kenshiro tells him that this is what fear feels like, and that his body unconsciously knows that it should be afraid.

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[[folder:Comics]]
* In PeterDavid's "Earth Angel" version of ''{{Supergirl}}'', the demon Buzz feels a horrible pain when he tries to leave her. At first he thinks this is God's doing, but it turns out that, for the first time since he was a human, he's feeling guilt.
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[[folder:Fanfiction]]
* In ''[[http://xekstrin.tumblr.com/post/85696889758/duality Duality]]'', a ''WebAnimation/{{RWBY}}'' fic written from [[ArtificialHuman Penny]]'s perspective, she describes her first experience with grief.
-->''These people had made her happy, and they were gone now. It seemed strange that these contrasting truths existed alongside each otheró that she was happy to be learning new things and going new places and sad to be leaving the old ones behind. That Erasmus had been important to her, though she didnít know it until now. That people could hate pain and need it to survive.''
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[[folder:Film]]
* In ''Film/TheProducers'', Leo Bloom "feels strange" while spending an afternoon in the park with Max Bialystock. Bialystock suggests that maybe he's feeling happy.
** In the play version, Leo gets that same feeling or similar after his first encounter with sexy foreigner Ulla. In this case, Max calls it an 'erection'. Or in some modern performances, 'swine flu'.
* In the full length movie version of TheGrinch, The Grinch has this reaction when the Who's song fills him with joy. He also suffers from what looks like a heart attack caused by his heart rapidly growing.
-->'''[[JimCarrey The Grinch:]]''' [[LargeHam HHHNNNNGGG! MAX! Help me! I'm... FEELING!]]
* Giselle's first experience with anger in ''{{Enchanted}}''.
* According to [[WordOfGod Word Of Actress]], Hermione went through this regarding her feelings about [[OperationJealousy Ron dating Lavender]] in ''Film/HarryPotterAndTheHalfBloodPrince'':
-->'''Creator/EmmaWatson''': Hermione doesn't realize what it is that she's feeling, but it's probably just insane jealousy.
* In ''Film/KickAss2'', Mindy "Hit Girl" [=McCready=], who had been trained to be a fighter and killer since childhood, gets aroused for the first time when she watches a boy band music video. She gets scared and asks what is happening to her.
* In ''Film/ErikTheViking'', Thorfinn Skullsplitter asks this when the party meets [[TheDreaded Halfdan the Black]] and he experiences fear for the first time.
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[[folder: Live Action TV ]]
* From an episode of ''Series/{{Scrubs}}'':
-->'''Jordan:''' I may have screwed up Blond stickís relationship and now I have this ''really weird'' feeling...
-->'''Dr. Cox:''' Itís called "guilt", ya Vulcan.
* ''Series/{{Profit}}'', when Jim Profit is confused by tears in his eyes [[spoiler:after killing his father.]]
* ''GossipGirl's'' Chuck Bass when he first comes upon feelings of love. "''I feel sick, like there's... something in my stomach. Fluttering.''" Poor fellow, the object of his affection promptly informs him that the butterflies have ''got'' to be murdered.
* Series/{{Seinfeld}} episode "The Serenity Now". Jerry's current girlfriend challenges him to openly express his feelings, in this case, anger. This backfires as he becomes overly angry about everything, leading to the girlfriend eventually dumping him. For the first time, Jerry actually reacts to this not-too-uncommon turn of events, to which Elaine responds "Jerry, you break up with a girl every week!" Jerry, mystified by his own emotions, touches his eyes and says "W-what is this salty discharge?" Elaine: "Oh my God, you're crying." "That's horrible. I care!"
* Gob in ''Series/ArrestedDevelopment'' is puzzled to feel something that he can't identify as either 'envy' or 'hungry', when coming to terms with the fact that [[spoiler: Steve Holt is his son.]]
-->'''Michael:''' Could it be love?\\
'''Gob:''' I know what an erection feels like, Michael! No, it's the opposite. It's... it's like my heart is getting hard.
* On ''Series/{{Angel}}'' Illyria, an EldritchAbomination stuck in human form, is not comfortable with a lot of emotions. While she's familiar with grief and rage, even if she does feel unsure how to [[IFeelAngry express them properly]], feeling betrayed is a new one. In her time anyone would betray anyone else if they showed weakness, and didn't take it personally.
* In the ''Series/{{Star Trek|The Original Series}}'' episode "[[Recap/StarTrekS2E9Metamorphosis Metamorphosis]]", the Companion doesn't understand what Zefram Cochrane means when he complains about being lonely. After she becomes human, she understands.
-->'''Hedford/Companion''': Loneliness... this is loneliness. Oh, what a bitter thing. Oh Zefram, it's so sad, how do you bear it, this loneliness?
* This happens to several of the emotionless Observers in ''Series/{{Fringe}}''. September feels [[spoiler:paternal love towards Observer child created from his biological material]], and later [[spoiler:sympathy and friendship towards the Fringe team]], which, together, kick off much of the MythArc. August feels [[spoiler:romantic love, leading to his death]]. And Captain Widmark is slowly consumed by [[spoiler:an obsessive desire to catch the Fringe team]].
* ''Series/YoGabbaGabba'': "What, what, what is fun, fun, fun?" - Plex (the robot)
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[[folder:Theater]]

* Draco does this in AVeryPotterMusical, experiencing... certain feelings and sensations for the first time when he sees the cleaned-up Hermione. It becomes one of the show's Crowning Moments of Funny because Draco is played by a girl. Ron has a similar but much more subtle reaction during the scene.
* Uttered by Galinda, the spoiled AlphaBitch who occasionally borders on CloudCuckooLander in the musical ''Theatre/{{Wicked}}'', when she is denied entrance to the Sorcery Class she craves: "Something's wrong here. I'm not getting what I want." Later, she utters, in grief, "Is this what ''other'' people feel like?"
** And then there's the song that would be the TropeNamer if the phrase wasn't OlderThanTelevision. For humor, the description of the mutual feeling Elphaba and Galinda have for each other is described to imply LesYay before revealing what it really is: Loathing.
*** [[FoeYay Loathing]], [[BelligerentSexualTension eh]]? WordOfGod has [[WordOfGay said]]..

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[[folder: Video Games ]]

* In the video game ''{{VideoGame/Borderlands 2}}'', Goliaths will occasionally say this verbatim if their health gets low enough.

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[[folder: Visual Novels ]]

* In an interesting meta-example, the VN ''VisualNovel/KatawaShoujo,'' when released, turned out to be the one thing on the internet that could [[http://i.imgur.com/by4JK.jpg make]] [[ImageBoards 4chan]] [[http://i41.tinypic.com/5owp3a.jpg cry]].
* Arcueid in ''VisualNovel/{{Tsukihime}}'' after Shiki fails to show up for their meeting. She's incredibly angry because to her it feels like she got stood up on a date. After she calms down, she realizes its not like her to get so upset and asks Shiki why he thinks she got so angry. She's not used to feeling emotion towards people and will be vaguely accepting of the idea that she's selfish or that she hates him.

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[[folder: Web Comics ]]

* As demonstrated by the page pic, [[PennyArcade Tycho's]] tainted, twisted, mutant soul severely limits the situations in which he can feel things like joy.
* In Webcomic/MegaTokyo, Ed feels ph34r for the first time in [[http://www.megatokyo.com/strip/819 this strip]]. Cue manic laughter.
* ''The Parking Lot is Full'' plays with this one, with a woman who is suddenly struck with an emotion no one has ever felt before.

[[/folder]]

[[folder: Web Original ]]

* Strong Sad, of WebAnimation/HomestarRunner, claims that "Something weird is happening to the sides of my mouth!" when he smiles in the Halloween special.
* In DrHorriblesSingAlongBlog, Captain Hammer apparently feels pain for the first time after being hit with an explosion, and the experience drives him to psychiatry and sobbing like a little girl.
* WebAnimation/ZeroPunctuation:
--> '''Ben "Yahtzee" Croshaw:''' But after I'd played for a couple of hours, a strange thing happened; I was actually having fun. I know, it was a weird and frightening realization.

[[/folder]]

[[folder: Western Animation ]]

* ''WesternAnimation/HowTheGrinchStoleChristmas'' "And what happened then? Well, in Whoville they say that the Grinch's small heart grew three sizes that day. And then - the true meaning of Christmas came through, and the Grinch found the strength of ''ten'' Grinches, plus two!"
* ''TheSimpsons'':
-->'''Grandpa:''' I tried to be a good babysitter, but I failed. I'm a feeb. A useless, old, worn out...
-->'''Bart:''' Lisa, I have this strong unpleasant feeling I've never had before!
-->'''Lisa:''' It's called "remorse", you vile burlesque of irrepressible youth.
** Subverted in another episode when Bart inadvertently gets Skinner fired.
-->'''Bart:''' I thought I'd be jumping for joy the day Skinner got fired, but all I have now is this weird, warm feeling on the back of my neck.
-->'''Lisa:''' It's called guilt, you feel guilty that your little stunt cost a man his job!
-->'''Bart:''' Yeah, maybe
-->Camera zooms onto Bart's neck, showing a tick feeding on the back of his neck.
* Batman had to be told once in [[{{DCAU}} The New Batman Adventures]] that a warm, fuzzy feeling was called happiness.
* King Julien when he feels guilt for the first time, in ''ThePenguinsOfMadagascar'', "Assault And Batteries":
-->But what is this feeling I am feeling? It is not a happiness. It is a feeling that I have not done all I should have done! I do not like it! How do I make it go away?
* [[SpongeBobSquarePants Plankton]] in [[http://www.youtube.com/watch?v=KqhfLTsEeZg The Fun Song.]]
* Wally in an episode of the ''Dilbert'' TV show had an experience like this. He had been hypnotized to do work. When it wore off, he mused to the effect of "What is this? I feel unclean. More so than usual."
* Luna in ''WesternAnimation/MyLittlePonyFriendshipIsMagic''. "Your princess enjoys this 'fun'. In what other ways may we experience it?"
* Finn from ''WesternAnimation/AdventureTime'' goes through this when he experiences [[GreenEyedMonster jealousy]] for the first time at the sight of Princess Bubblegum with Ricardio the Heart Guy.
-->'''Finn''': "Ugh. I feel, ''weird''."
-->'''Jake''': "Sounds like you're dealing with some new emotions you don't understand: like ''jealousy''."
-->'''Finn''': "Blagh!"
** This trope is used in a heartwrenching way in "All Your Fault" when Lemonjon learns of "the feeling of caring unknown to lemons." He later [[spoiler: explodes and reverts to lemon candy, effectively killing himself]], so the Lemon People will have enough food to eat and won't attack the Candy People.
* Louise from BobsBurgers goes completely crazy (even more so than usual) when she develops a crush on the lead singer of the band Boyz 4 Now, Boo-Boo.
--> '''Louise''': "Oh my God, what's happening to me!? CUT ME OPEN, I'M INFECTED! PULL IT OUT!"
--> '''Tina''': "It's okay, Louise. You're just having a crush."
* Happens to Mandy in ''WesternAnimation/TheGrimAdventuresOfBillyAndMandy'' when she experiences a crush on a newcomer to town. Frustrated by the new feeling, she implores Grim to cut her heart out with his scythe but the two come up with something a lot more clever: Using an oddly more literal interpretation of the words "Break The Cutie."
* Happens in ''WesternAnimation/XiaolinShowdown'' When a humanlike robot steals one of the Shen Gong Wu. A heart. At first he is thrilled at all the new feelings he experiences until someone insults him and he feels hurt. He promptly declares that he doesn't like feeling human, takes the heart out of his chest and discards it listlessly.
* In the ''WesternAnimation/BatmanTheBraveAndTheBold'' ChristmasEpisode "Invasion of the Secret Santas!", Red Tornado interprets a strange sensation as the "Christmas spirit" he's been trying to understand. It's actually an overload that causes him to explode (fortunately, he's a robot and is [[GoodThingYouCanHeal good as new]] once his parts are gathered and reassembled).
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