double ball penitration 

When having sex with a girl you put your balls into her butt hole. Caution dont not let her tighten her butt muscles hard this can result in a broken ball or two. If your having anal sex try inserting your balls in to her vagina. Variants include single ball penitration, and the more common zero ball penitration.

Obama -"I was having sex with this pornstar in my dreams and she told me to insert my balls in her ass ."

Clinton-" Me and hillary call that double ball penitration"

double ball penitration by anonanalballs January 27, 2013