Chipmunk-pitched laughter has long been a staple of cartoon comedy, where sped-up voices make ordinary reactions sound absurd and instantly recognisable. Online, creators reuse that effect as a short laugh track to signal that a moment is meant to be funny rather than serious, especially in memes, pranks and reaction edits. Because the clip is only a few seconds long, it fits easily between jokes, over fail footage or after an unexpected twist, and its mix of high and low laughter helps it stand out from a standard laugh track.