[[quoteright:280:[[Manga/KodomoNoOmocha http://static.tvtropes.org/pmwiki/pub/images/hummingbird.jpg]]]]
[[caption-width-right:280:[[GenkiGirl Sana]] cranks this trope UpToEleven.]]

When an animated character gets frightened, excited or angry, she may flail her arms or legs around so fast that they are literally a blur. Sometimes it's a complete blur; other times, you will see the arms or legs, but in multiple vision.

This trope comes in a few simple variations:
* A character doing a WildTake flails her arms, sometimes jumping in the air and flailing her legs, too. Occasionally, this will cause her to hover like a helicopter or a hummingbird.
* A character who is running TooFastToStop will have this happen to his legs while his arms appear normal. Any InnocentBystander who gets caught in his path may become ATwinkleInTheSky. This is similar to but distinct from WheelOFeet.
* A small character being held AtArmsLength may swing her arms this way in a futile effort to strike the taller character.

This is a typical behavior for a GenkiGirl.

See also: KewpieDollSurprise. Also see RapidFireFisticuffs[=/=]SpamAttack for an offensive, usually non-comedic, version.

[[AC:{{Anime}} and {{Manga}}]]
* Sakura does this while attempting to whack Touya for being a jerk in the first episode of ''Manga/CardcaptorSakura''.
* Sana Kurata of ''Manga/KodomoNoOmocha'' (shown above) does this [[OncePerEpisode at least twice per episode]].
* Tomo does this in the first episode of ''Manga/AzumangaDaioh'' upon finding out she's late for class.
* This happens in an episode of ''Anime/TokyoMewMew'' where Ichigo does this with her legs...until she slips on a piece of broken crockery.
* Done in an episode of ''Anime/{{Dragonball}}'', where Goku pretends he has a technique that lets him have eight arms. The trick, of course, is that he's waving them up and down so fast the after-image makes it seem real. This is in response to Tenshihan's technique of actually growing a second pair of arms.
* Negi of ''Anime/MahouSenseiNegima'' tends to do this when the students mock or belittle him.
** Same with Becky of ''Anime/PaniPoniDash''.
* Done quite often in ''Anime/{{Slayers}}''.
* In ''Manga/KuroganePukapukaTai'', Commander Kuki does this when Captain Mary forcibly kisses her.
* Subverted in ''VisualNovel/UminekoWhenTheyCry'', Jessica tries this and gets interrupted by an asthma attack.
* This happens to [[CuteBruiser Yachiru]] frequently in ''Manga/{{Bleach}}''.
* The main character in ''Anime/FruitsBasket''.
* In ''Anime/SonicTheHedgehogTheMovie'', Knuckles reacts this way upon discovering, "My hat's on fire!".
* This happens to many girls frequently in ''Manga/FairyTail'', particularly when humorously distressed or angry. [[TheChick Lucy]] does this most often, and Coco from the most recent arc is guilty of this as well, running around the room and doing this as she talks to people.
* Midori from ''Anime/MidoriDays'', another Genki Girl.
* Taiga, yet again a Genki Girl, does this sometimes in ''VisualNovel/FateStayNight'', at least in the game. She doesn't move her arms that fast though since ''FSN'' doesn't really use cartoonish body movements like that but Taiga's antics push it sometimes.
* Brook from ''Manga/OnePiece'' runs so fast that you see multiple legs, especially when he [[WalkOnWater runs across water.]]
* Yui from ''Manga/LuckyStar'' often does this when she's waving to greet people.
* Suzu of ''Amuri in Star Ocean'' flaps her arms on a regular basis and for no particular, to the point that she has to use ''her hair'' in place of hands.
* Miss Hinako's child form from ''Manga/RanmaOneHalf'' does this so frequently that this sort of movement is referred in the fandom as the Hinako Shuffle.
* In the ''Anime/{{Pokemon}}'' episode "Sharpedo Attack", May does this when she's menaced by a Sharpedo while on a boat.
* A more controlled and odd version occurs in ''Manga/TheWorldGodOnlyKnows'': When Keima suffers from severe game withdrawal, he compensates by playing eight or more games simultaneously, following all the games and stories well enough to emotionally respond to each one. When he's playing like this (in what he calls "God mode"), he uses the controllers for all the systems, moving from controller to controller so quickly that it looks like he's sprouted several extra pairs of arms.

* Getafix does this in ''ComicBook/{{Asterix}} and the Big Fight'', but that was mostly pointing while yelling orders.
* While this happens on occasion in ''Comicbook/MonicasGang'', Smudge has been able to use this to actually ''fly'' when the other option is falling into water.

* ''Disney/TheThreeCaballeros'': This happens to WesternAnimation/DonaldDuck during the extended DisneyAcidSequence set to "You Belong to My Heart".

* Vicki did this in the ''Series/SmallWonder'' episode "Vicki and the Pusher".
* [[Series/ElChavoDelOcho El Chavo]], whenever someone suggests him doing something exciting.

* It is possible to do it with the right lighting, such as CRT displays and other strobing light sources.

* [[VideoGame/YoshisIsland Yoshi's]] Flutter Kick does this. Hell, just ''running'' does this.
* ''Franchise/StreetFighter'' has Chun Li doing this in a similar way to Yoshi.
* Extremly noticeable with Shiki in ''VideoGame/TheWorldEndsWithYou''. Her waving image lasts longer than most, due to the sprite-based nature of most cutscenes.
* The [[VideoGame/MegaManLegends Servbot's]] Versus artwork from ''VideoGame/MarvelVsCapcom2'' features him '''''desperately''''' [[RuleOfCute flailing around his little arms]], [[http://images.wikia.com/megaman/images/4/46/Servbot-mvc2-vs.jpg attempting to attack]].
* The cute little goddess Suwako in ''[[VideoGame/{{Touhou}} Touhou Hisoutensoku]]'' does this to remain airborn.

* In ''Webcomic/ElGoonishShive'', Grace does it [[http://www.egscomics.com/?date=2011-04-29 here]], Susan's [[GoodAngelBadAngel shoulder nature]] does it [[http://www.egscomics.com/?date=2008-06-16 here]], and one of Nanase's DoppelgangerSpin doubles does it [[http://www.egscomics.com/comics/20021118_02MW.jpg here]].

* ''WesternAnimation/TheSimpsons'' has two rather literal examples of this; in one HalloweenEpisode, Krusty's pacemaker shorts out and gets set to Hummingbird Mode ("Nectar! Nectar! Gotta drink my weight in nectar!"). In another, we see security cam footage of Apu thinking he's some kind of hummingbird after working for 96 hours straight; he tip-toes across the Qwik-E Mart, flapping his arms and humming (he also says that he tried to drink nectar out of Sanjay's head).
* Sometimes seen in ''WesternAnimation/TotallySpies'' particularly when Clover gets really angry.
* Although not human, WesternAnimation/CourageTheCowardlyDog often does this when scared, and he is scared a lot.
* Despite not being particularly fast, excitable or even human, Grup the Dragon from ''WesternAnimation/MightyMagiswords'' moves this way most of the time.