Place it near the end of a short edit, right after the warning or rule is shown, then follow it with Nope for a flat refusal and Okay Let's Go when the character charges ahead anyway.
Über diesen Sound
This 1.7-second clip captures Eric Cartman snapping out his stubborn declaration in a loud, smug cartoon voice. It feels bratty, gleeful and deliberately defiant, turning a small refusal into a joke. The line comes from South Park, the animated series created by Trey Parker and Matt Stone, where Cartman's selfish attitude made it a familiar reaction.