Punching the Monk 

masturbation. The tip of a penis resembles the shiney bald head of a monk. See also punching the midget punching the munchkin punching the cyclops

After 50 minutes of punching the monk, Don was wasted.

Punching the Monk by bill1970 July 10, 2010

Punching the Monkey

Euphamism for the act of coitus between a male and a female where the penis is inserted into the vagina only with a little more force than normally applied.

So Jim was punching the monkey last night and Linda got up in the middle of it and started crying as she said it hurt after taking it from the whole party all afternoon...

Punching the Monkey by Falg June 14, 2012