Here are a few definitions I found on urbandictionary.com. Read at your own risk they will make quite a few people say WHAT THE FUCK! Until yesterday I never heard any of them
The Donkey Punch is when your engaged in anal sex and when your about to ejaculate you punch the poor little lady in the back of the head so her anal cavity tightens.
A sexual act by nature (fetish) the cleveland steamer is when one person shits on another person's chest and then sits down and rocks back and forth like a steam roller.
This one is the worst.....
When a tube is stuck in two people's asses and one person takes a shit transferring the shit to the other person. (reworded definition)