Coquinou circulates online as a tiny reaction clip rather than a line from a well-known film or show, and its appeal comes from the word itself, a playful French term for someone being cheeky or naughty. Because the clip is under two seconds, it fits easily into short-form edits, streams and meme compilations, where a single recognisable sound can carry a joke without interrupting the action. Creators keep returning to it for light teasing moments, and its brevity, warmth and instantly readable tone help it stay useful long after longer meme sounds have worn out.