The phrase translates literally as but you smoke, sir, and its humour comes from that mix of formal address and direct accusation. Shared as a very short reaction clip, it circulates mainly in French-language meme and short-video edits, where a one-and-a-half-second line is enough to react to a reveal. Because the wording is instantly recognisable even to listeners with little French, it also travels in edits with subtitles or visual context, keeping it useful for catch-in-the-act moments long after its first uploads.