The phrase comes from the standard automated announcement played by French telephone networks when a dialled number is not assigned or cannot be reached, and it is familiar to French speakers from everyday calls. Clipped from that familiar message, it has circulated on soundboards and in short videos as a ready-made error sound, often used to fake a disconnected call or cut off a conversation for comic effect. Its appeal lies in its authenticity: listeners recognise it instantly, so creators do not need to explain the joke.