The screech comes from SpongeBob SquarePants, the long-running Nickelodeon cartoon about the optimistic sponge who lives in Bikini Bottom. SpongeBob is known for his squeaky voice and exaggerated reactions, and short clips of those reactions have circulated on soundboards, YouTube edits and TikTok for years. This victory version is popular because it is instantly recognisable and works without any context, letting creators signal a win, a comeback or an absurd triumph in just a few seconds.