The phrase combines everyday French with street slang, where wesh is a casual greeting or interjection and dehors simply means outside, so the full line is an emphatic way of telling someone to get out. No single film, show or creator is reliably credited with popularising this exact recording, and it circulates mainly as a shareable reaction clip. It spread through French speaking chats, gaming lobbies and short video edits, where the repetition makes it instantly recognisable even to viewers who do not speak French fluently.