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.

by Crazyassgangster August 21, 2008

menstruation

A process which happens every month to females and involves discharging the blood and other substances lining the womb, through the vagina. Lasts for 5 - 7 days. Can lead to uncomfortable situations if it begins in a public place, such as school and there's no tampons or pads on hand.

A common misconception regarding menstruation is that all females become moody and psycho during that time of the month. This is untrue. Not everyone suffers from PMS. It is also something that is not to be taken lightly if one DOES suffer from overbearing PMS.

Other things that can occur druing menstruation:
- cramps (abdominal pain)
- tender/sore breasts

Menstruation occurs throughout the majority of a female's lifetime, starting at puberty and ends with the onset of menopause.

When a female begins menstruating, it is cause for either celebration or lamentation.

Hey Chelsea! Guess what? My first menstruation cycle began last night!

by Zio November 17, 2006

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..

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...

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.

by Tom Naime January 28, 2009

anal penetration

term used in chicago meaning booty sex common sense

I performed anal penetration on that girl Cristina.

by young j May 25, 2006

Retaliation Penetration

Another word for "Hate Fucking" a person. When you dislike someone so much or are mad at them you bang them as hard as you can; taking out all your anger and frustration on them then kick them out of bed and make them go home once your done having your way with them.

Andrea is such a dirty skank, she went behind my back and tried screwing my best friend Jake. So tonight I plan on getting a little "Retaliation Penetration" done on her ass then breaking up with her!

by SassyJax01 November 2, 2011