Air horns have long been used at sporting events, parades and celebrations to make noise that carries across a crowd, and that same loud, attention-grabbing quality made the sound a natural fit for online video. In meme edits and montage parodies, a single blast became shorthand for hype, victory and over-the-top celebration, often landing on a surprising reveal or an impressive play. Because the sound is instantly recognisable and needs no context, creators continue to reuse it across short-form videos, reaction clips and sports highlights.