Flubber is the bright green, bouncing substance at the centre of Disney's family comedy Flubber, where it becomes a playful symbol of chaotic invention. Online, the short line naming it has been lifted out of that context and shared as a standalone viral meme sound, passed around in edits, reaction videos and chat messages. Its appeal comes from its brevity and its cheerful absurdity: in just over eight seconds it delivers a complete joke that needs no setup. That simplicity has kept it circulating long after the original film faded from everyday conversation.