Put it immediately after the setup line, as the punctuation before the visual payoff, then follow it with the SpongeBob Fail sound when the reveal turns out to be a flop, or with the Dramatic Dun Dun Dun sound when the reveal is meant to stay serious.
关于此声音
This is the Vine Boom, a one-second-plus burst of deep bass that lands hard and then rumbles away underneath the picture. It gives a plain moment an instant sense of importance, suspicion or silliness, as if something trivial has suddenly become dramatic. It grew out of Vine-era meme editing, where it was used to underline close-ups, stunned faces and abrupt cuts.