nipple penetration 

Nipple penetration is the act of inserting ones penis into a persons nipple (normally female).

I am saddened by the lack of nipple penetration porn on the internet.

nipple penetration by TurtleBoner May 13, 2015

penetrationship 

1. A word used to describe a relationship where there is little or no "relation", mostly penetration.
2. See fuck buddies

"I'm sick of all this touchy feely crap, relationships are too demanding, I want a penetrationship!"

penetrationship by skrow April 2, 2009

Penetration Nation 

When a zebra gets an erection from looking at dwarven gay child porn, then that zebra breaks the pelvis of a baby blob fish.

The Zebra at the zoo was doing a Penetration Nation

Penetration Nation by Giga N@GGI 2000 October 25, 2022

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