Rageux is French internet slang for haters, and déferlement de rageux is used online as a shorthand for a sudden rush of negative comments. The phrase circulates mainly in French-speaking meme, gaming, and commentary communities, where creators reuse it to frame backlash as something expected and almost funny rather than serious. Because it is short, in French, and instantly recognisable to that audience, it works as a quick reaction sound for videos, streams, and edits, and it keeps appearing whenever a post attracts a heated reply thread.