Air horns have long been used at sporting events, graduations and parties as a handheld noisemaker powered by compressed air, valued because a single blast is impossible to ignore. Online, that same blast became a staple meme sound for pranks, exaggerated celebrations and fake jump scares, often paired with rapid zooms and shocked reactions. Its short length and instant recognition made it ideal for soundboards and short-form video edits, where creators need a loud punctuation mark that audiences understand without any context or setup at all.