The phrase veste imperméable is everyday French vocabulary for a waterproof jacket, and the clip circulates online as a short soundboard sound rather than as a known quote from a film or show. Its humour comes from how specific and ordinary the wording is, which makes it easy to reuse as a non sequitur in edits, reaction videos and French language memes. Short spoken phrases like this spread because they are instantly recognisable, easy to time to a visual gag, and understandable even to viewers who know only a little French.