Goofy ahh sound effects

A rubber horn pushed until the tone breaks apart. This is the hit most edits reach for, because the distortion carries the joke on its own and it needs nothing on screen to explain it.

Pitch falling away as everything drags to a halt. It is the standard way to stop a video dead, and the smear on the way down is what tells an audience the moment has gone wrong.

A rough gritty transient with a broken tail. Cut it onto a snap zoom and the picture reads as damaged rather than merely fast, which is why it turns up on every hard push-in.

A toy squeak dragged far below where a squeak belongs. The mismatch between a thin reed and a heavy low body is the entire joke, and it sits under a face reaction perfectly.

A footstep scaled up until it is absurd. Placing this under a small movement makes the movement feel enormous, which is the cheapest visual gag available to an editor.

A wordless laugh bent up and down until it stops sounding human. It gives a reaction shot a voice without committing to a character, and it works over animation as readily as over footage.