Duff Man is the flamboyant mascot for Duff Beer in The Simpsons, Springfield's fictional brewery, known for his red cape, sunglasses and catchphrase delivered with a flex. His short entrance theme became a recognisable cue for the character, signalling a promotional stunt or a sudden party moment was about to happen. Clips of the song spread through Simpsons compilations and meme edits, where creators reuse it for any overconfident arrival. It remains popular because the reference is instant, even for viewers who have not watched the show recently.