Put it exactly on the hard cut between scenes, then let the new scene play for a beat before adding a reaction sound. For a longer time jump, use the SpongeBob time-skip cue instead of stacking both cues, and save the fail sting for the moment that actually goes wrong.
Об этом звуке
This is a brief twangy guitar sting, lasting about four seconds, that marks a sudden change of scene. It feels cheerful and light, even when it follows an awkward or chaotic moment, giving the listener a quick reset before the next joke. It comes from South Park, the animated series created by Trey Parker and Matt Stone, where it plays between scenes.