Place it right after the failed joke, before any reaction shot, so the dismissal becomes the punchline of the edit. Follow it with Nelson's Ha-Ha! for a harsher crowd response, or cut to Sad Violin when you want the flop to feel even more dramatic and drawn out.
關於此聲音
This is a short spoken reaction clip, just under four seconds long, delivering the flat line 'not funny, didn't laugh' in a dry, unimpressed voice. It lands as a deadpan shutdown rather than a laugh, giving the listener that awkward pause after a joke misses completely. The bluntness makes it feel cold and dismissive, perfect for calling out a weak attempt without raising your voice.