In France, a boîte à meuh is a familiar novelty toy: a small box that makes a cow moo when turned upside down, mimicking the sound with a simple internal mechanism rather than a recording. The toy has long been a joke present and party gag, which is why the sound is instantly recognisable to French audiences and amusing even to people who have never owned one. Online, the short moo has travelled as a soundboard clip for memes, pranks and reaction videos, where its brevity and comic timing keep it useful.