Goku is the central hero of the Dragon Ball anime franchise, and his blunt you fool line has become a popular reaction clip across meme pages, gaming streams and short-form video edits. Fans reuse it because the character is instantly recognisable and the insult works without any setup, whether the target is a rival, a teammate or a fictional villain. Shared widely through soundboards, it has stayed in rotation as a quick way to call out overconfidence, poor decisions and obvious mistakes in online humour.