The shout comes from SpongeBob SquarePants, where it became a running gag shouted by the background fish Fred whenever he is hurt in an accident. Fans began clipping the line and sharing it as a reaction sound, and it later spread through YouTube edits, TikTok videos and meme compilations as shorthand for cartoon pain. Its popularity has lasted because the delivery is instantly recognisable even without seeing the show, and the short length makes it easy to drop into almost any SpongeBob fail or mishap moment.