When an animated character gets frightened, excited or angry, they may flail their 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 Wild Take flails their arms, sometimes jumping in the air and flailing their legs, too. Occasionally, this will cause them to hover like a helicopter — or a hummingbird.
A character who is running Too Fast to Stop will have this happen to their legs while their arms appear normal. Any Innocent Bystander who gets caught in his path may become A Twinkle in the Sky. This is similar to but distinct from Wheel o' Feet.
A small character being held At Arm's Length may swing their arms this way in a futile effort to strike the taller character.
This is a typical behavior for a Genki Girl.
Also see Rapid-Fire Fisticuffs/Spam Attack for an offensive, usually non-comedic, version.
