The line comes from SMG4: A Happy Little Road Trip, a fan-made Mario parody series known for fast, chaotic comedy and exaggerated character reactions. Short voice lines from SMG4 episodes are frequently clipped and shared on soundboards because they work without needing the full episode context. This one spread as a reaction sound for dismissive, unbothered moments, where a single confident refusal says more than a long argument. Its short length and clear attitude keep it useful for creators who want a quick punchline that viewers recognise instantly.