Non tu dégages is a straightforward French expression meaning no, you are leaving or get out, and online it is most often shared as a short reaction clip rather than as part of a longer scene. French-speaking creators use it to answer unwanted comments, interruptions and absurd requests, while non-French audiences recognise it mainly through its blunt tone and timing. Its appeal comes from that instant clarity: no setup is needed for viewers to understand that someone is being told to leave.