Atomic Donkey Punch
The atomic donkey punch is very similar to the brass donkey punch. For you will be doing your girl doggy style and as you are about to climax you will punch her in the back of the head in order to make your vaginal wall muscles tighten to better your orgasm, but with the atomic donkey punch you use a an aluminium baseball bat which is even better.
It was sweet, I gave her an atomic donkey punch then was able to get a nap in before she woke up.