Place this clip at the exact frame the toilet mishap is revealed, after the setup line and before the reaction shot. Follow it with a wet fart sound for a second bathroom gag, then a short nope reaction if the character gives up.
About this sound
This is a short 2.6-second sound effect of a toilet failing and flushing wrong, with a splashy, broken flush that signals a bathroom disaster. It gives listeners a cringe-filled, funny feeling of embarrassment and bad luck, like a simple chore going publicly wrong. The clip comes from The Sims game series.