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4 definitions by Erinski Easy

 
1.
A spy, an informer/snitch. Someone who penetrates/enters a circle of friends or organization for the sole purpose of gathering sensitive or classified information and leaking it to an opposing or competing group.
We have a mole in our organization and we don't know who it is, so watch your back and don't give out sensitive information to anyone.
by Erinski Easy December 11, 2008
 
2.
The entering of one object into another, usually through some sort of semi-permeable membrane/skin/defense/covering.

See also:
1. Sexual penetration
2. Warfare penetration
3. Market penetration
4. Basketball penetration
5. Magical penetration
The addict will sometimes penetrate his arm with a syringe to inject drugs directly into his blood stream. This method of delivery is said to produce a more efficient high.
by Erinski Easy December 11, 2008
 
3.
Friend + Enemy = frienemy

An enemy who uses friendship to conceal their attacks.
Jack: "Jenny, you should watch your back with Gill, cause before you came she was telling everyone your secret!"

Jenny: "What! she's such a frienemy!"
by Erinski Easy December 11, 2008
 
4.
This is a term used to describe any type of ass hole behavior. With special emphasis on the ones your friend probably talk about behind your back.
James:
"He took the money we were saving to buy the fan for our office and bought himself a hooker last night."

Jim:
"What a vagina china" thing to do
by Erinski Easy January 22, 2009