Place it at the end of a failed joke or a plan going wrong, as the closing response. Follow it with the emotional damage meme for a failed punchline, or cut to the baby laughing meme when the room finally breaks.
Über diesen Sound
This is a short Joker voice line, lasting about five and a half seconds, in which he says he will laugh anyway despite everything going wrong. The delivery is calm and unsettling, turning a simple refusal to be beaten into something darkly funny and strangely reassuring.