The airhorn began as a loud handheld device used at sporting events, on boats and in stadiums to grab attention over a crowd. Its recorded blast later became a familiar DJ drop and a staple of online meme culture, where a single honk could turn an ordinary clip into a joke. Short video platforms helped spread it further, with creators using it for celebrations, fails and surprise reveals. It remains popular because the sound is instantly recognisable, needs no explanation and works across languages.