Short horn blasts, including the classic air horn, have long been used in sports broadcasts, comedy sketches and video games to signal attention, celebration or a sudden arrival, and that familiar association carries over when the sound is lifted into short-form video. Online creators reuse horn clips as a quick audio shorthand for hype, mock grandeur or an abrupt interruption, because listeners recognise the signal instantly without needing context. Its three-second length fits neatly into memes, reaction edits and gaming highlights, keeping it useful long after any single trend fades.