Mort de rire is French slang for dying of laughter, usually shortened to MDR, the French equivalent of LOL. This laugh clip circulates as a reaction sound in French-speaking meme culture and on multilingual soundboards, where short expressive laughs get reused across videos, streams and voice chats. Similar hearty-laugh sounds have long been staples of comedy editing, from sitcom laugh tracks to reaction memes, because genuine laughter is instantly understood in any language. Its appeal is simple: it sells the joke for the creator and tells the audience exactly when to laugh.