Place it at the exact point a prank goes wrong, after a shocked sound and before the oh no no no laugh, so the sequence moves from setup to mishap to reaction. A goofy yell works as a later tag when the victim finally gives in and laughs along.
關於此聲音
This two-second clip is a single wet fart that rises and falls in a way that sounds like a startled uh oh, as if the sound itself realised it had slipped out. It is gross, silly and funny, the kind of bodily noise that makes a room laugh before anyone can pretend it did not happen. Its charm is the accident in it, a normal fart given a guilty voice.