Mushroom Stamped 

The act of getting a dong slapped on your head

Joe was so drunk I mushroom stmaped his ass

Mushroom Stamped by Anonymous March 16, 2003

mushroom cloud 

NOUN: the spare-tire/belly fat that is forced over an overweight person's too-tight jeans. (resembles a mushroom cap)

When Rosie O'Donnell puts on a pair of size 20 jeans, her mushroom cloud is considered a weapon of mass destruction.

or "Sure, i can fit into size 6, but it gives me a mushroom cloud"

mushroom cloud by slothymcgee February 14, 2008

mushroom-head tattoo 

the act of pulling out your cock and smacking someone in the face with it, leaving the imprint of your mushroom head

when kayla got out of line and started crying, steve gave her a mushroom-head tattoo

mushroom-head tattoo by tony May 2, 2004

mushroom effect 

mushroom: the shape of the tip of the penis when erect, if circumcised.
effect: the feeling that takes over when you see it, makes you want to suck on it (only if you enjoy oral sex)

-its when you see it that you want to suck on it.

Everytime a girl sees my hard dick they jump right on it and give me head. It's like.. a mushroom effect.

mushroom effect by SmileyJay May 9, 2008

Mushroom bruise 

To whack a girl on the head mainly aiming at the forehead with the head of the penis

Alex left a mushroom bruise on Traci and Chanti, it looks like they converted to Hindu now...

Mushroom bruise by German Gheppetto June 22, 2006

mushroom tattoo 

See mushroom stamp

I don't know what happened to Sarah at the party, but she came back with a nice mushroom tattoo.

mushroom tattoo by J April 22, 2004

Mushroom Cloud 

Powerful Voluminous Ejaculation.

Named as such because it shoots from the mushroom shaped penis head and often forms random shapes where it lands much like clouds do.

I hammered my girlfriends "Cockgarage" so hard that I shot my "Mushroom Cloud" all over her "Double Stuffed Oreo's"

Mushroom Cloud by Jeff D April 21, 2003