Place it at the end of a gag, then follow with the classic fart sound for a bigger laugh, or lead into it with the anime wow sound when a cute reveal needs a second beat.
Über diesen Sound
This is a short, under-a-second squeak from a rubber duck toy, the kind of high, rubbery peep you get from squeezing its belly. It feels light, silly and instantly playful, like a tiny joke landing without any words. The quick pop makes it easy to picture a bath toy or a cartoon duck, and it works best as a small burst of nonsense rather than a long effect.