Place it in the middle of a gaming or reaction edit, right after the confusing moment lands, then follow it with a short refusal sound so it reads as the setup and the refusal as the payoff, before returning to the main action.
Über diesen Sound
This short clip captures Luigi in a fast, jumbled rush of blabbering that runs for just under five seconds, with his words tumbling over each other in a nervous, excitable burst. It feels funny and chaotic, like catching a friend mid-ramble when he has far too much to say at once and no idea where to stop.