Place it after the setup line in a prank edit, then follow it with the Vine Boom for the reveal and the Classic Fart Sound for a second hit before the reaction shot.
Über diesen Sound
This is a single fart noise lasting just over a second, with a low, wet rasp that cuts off abruptly. It lands as rude, childish humour, the kind that makes a room groan and laugh at the same time because it is so blatant and badly timed by nature.