The phrase itself is common French slang for asking whether a crowd is fired up, which is why it translates so naturally to videos, streams and live events even outside France. Online it circulates as a short hype clip rather than tied to one famous scene, with French-speaking creators using it to open content, warm up an audience and set a party tone. Its appeal is simple and repeatable, a familiar call that needs no translation to feel exciting, so it keeps appearing in edits, intros and reaction moments.