Put it right after the request appears on screen, so the refusal answers the ask in the edit. Follow it with Law and Order Dun Dun to close the scene, or lead into it with You What when the request itself sounds absurd.
關於此聲音
This short voice clip repeats the phrase 'not gonna do it' twice in about two and a half seconds, spoken in one clear voice. It feels stubborn and playful at once, like a refusal delivered with a grin rather than anger. The tone makes it funny and relatable, a light way to push back without starting a real argument.