Place it immediately after the failed joke in your edit, then follow it with a Wrong Answer Game Show sting to underline the flop before cutting to the next scene. For a slower finish, pair it with Sad Violin instead and let that cue close the moment.
关于此声音
This is a short, roughly three-second clip of PewDiePie saying 'It's not funny' in a flat, unimpressed voice, with the emphasis landing on the dismissal rather than the words themselves. It feels dry and awkward in the best way, like a deadpan shutdown that makes a bad joke feel even worse.