Various factors have caused this to spring to mind over everything else and it wasn’t technically part of the cartoon:

Way back when I was a kid, a friend had invited me over to his house and somehow we ended up watching a VHS of The Real Ghostbusters. The episode centred around a baseball match between good and evil. Good had to play fair and Evil could cheat.

At one point, the batter for the evil side, some kind of demon, rather than hitting the ball, chose to swallow it and spit it back out at high speed.

The funny part is that my friend happened to hit freeze-frame with the ball just about to enter the demon’s mouth. I forget why he did that. Maybe we got distracted and wanted to watch it again. Rewind, stop/freeze-frame, play or something like that.

Anyway, because of animation smearing, the way the demon was drawn for that one frame was goofy as hell. The demon looked stupid enough already in a baseball uniform and cap, stretching suspension of disbelief. That goofy frame pushed it right over the edge. We fell about laughing.