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

ANAL PENETRATION 

OWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW

ANAL PENETRATION FUCKING HURTS MY ASSHOLE

ANAL PENETRATION by FUCK HER IN THE ASS August 31, 2015

gay penetration 

When a sexually excited male grasps his errect cock, placing it on another sexually excited male's rectum, and pushes it into that man's bussum.

Harvey and Fred like to have gay penetration.

gay penetration by HeyArnoldis1 June 11, 2016

Optical Penetration 

When a girl has a fake eye, you remove said eye and insert penis into socket.

I performed optical penetration on Mike's girlfriend last night.

Optical Penetration by Crazyassgangster August 21, 2008

Penetration tester 

A worker who attempts to exploit a venerability in a corporate network.

Person 1: I just got hired on at RIM!!
Person 2: So you just got a RIM Job??
Person 1: YES...and I got a pretty cool position too
Person 2: O'rly? (go/orly)
Person 1: Penetration Tester
Person 2: So let me get this straight...your a penetration tester at your RIM Job??
Person 1: Yes sir..

Penetration tester by Bigg Jimmy B May 21, 2009

Quad penetration 

Insertion of 4 items into an orifice or receptacle. The items inserted are generally, but not limited to, male genitals.
For when DP just isn't enough.

The wife and I are going to push the boundaries today. We're trying for quad penetration...

Quad penetration by Big Pimp Daddy April 14, 2006

branal penetration

an activity (usual involving leaning or school) that is so strenuous that your brain feels like it is being rapped.

Dood the ap physics c test was total branal penetration.

branal penetration by Tom Naime January 28, 2009