mushroom stamp 

A variation of teabagging where the bagger first marinates his undercarriage in a viscous substance such as barbeque sauce or ketchup. The goal is to leave a mushroom shaped mark on the victim.

After a quick trip to the condiment counter you are all set to deliver a mushroom stamp

mushroom stamp by [e-mail] November 24, 2006

mushroom stamp 

Placing the head of your Johnson on an unsuspecting person.

I waited till Gina passed out, then I mushroom stamped that bitvh.

mushroom stamp by Fo T Wada February 28, 2008

Mushroom Stamp 

Using the head of a penis and smacking someone in the face leaving behind a mark in the skin that looks like a mushroom.

My friend fell asleep so I gave him a mushroom stamp;
I gave my girlfriend a mushroom stamp during a BJ

Mushroom Stamp by OuttaSight OuttaMind December 28, 2011

mushroom club 

Military unit (usually) that is constantly kidfoh-ed; that is, kept in the dark and fed nothing but horseshit. These are usually, but not always, "elite" units that will soon (and often) be called upon to do something damn-near impossible, of questionable legality, and with entirely too little training, preparation or equipment. Superiors will then wonder why-oh-why these boys and girls couldn't pull a miracle out of their asses.....

"So, Slick, which mushroom club are you with?"

mushroom club by Sgt Draggi February 12, 2008

mushroom ram 

when you slam your full erection into a girl's upper lip.

Kait has a bruise on her upper lip... it's pretty obvious that brian got her with a mushroom ram.

mushroom ram by schogirl January 17, 2010

Mushroom Explosion 

A musroom explosion is when the the head of a man's genitalia explodes, leaking brownish-red cream.

Dude, when we were upstairs, my mushroom exploded and she drank the cream from it.

Mushroom Explosion by Anthony December 15, 2003

Mushroom Stamp 

When you take your weiner and slap it on a girls a**.

"I gave Jessey a Mushroom Stamp to let her know who's boss!"

Mushroom Stamp by lovedthetowels October 15, 2009