Listed simply as White Girls on user soundboards, this clip has no confirmed film, game, or show source attached to it, so its life online is as a standalone meme sound rather than a famous quote. Short voice phrases like this spread because they are easy to drop into edits, streams, and group chats without setup, and the 4-second length fits a single reaction beat. Creators keep reusing it as a light, teasing tag that can stand in for a caption or a spoken aside.