Mister V is a French comedian and YouTuber known for deadpan humour and short, quotable reactions, and c'est nul has become one of his most recognisable dismissals. The phrase simply means that's rubbish, which makes it easy to reuse even for viewers who know little French. Shared widely as a reaction clip on video platforms and soundboards, it works as a compact verdict on anything disappointing. Its staying power comes from that directness: no explanation is needed, and the judgement lands instantly in edits, streams and meme compilations.