chocolate mushroom stamp 

After fucking your chick (or dude) in the ass, you pull out your dick and slap her (or him) in the face thus giving them a shitty mushroom stamp hence the chocolate mushroom stamp.

My chick loves chocolate so I fucked her in the ass pulled out and smacked her in the forehead with my mushroom tip leaving a glorious looking chocolate mushroom stamp. I never had anal sex with her again :(

chocolate mushroom stamp by Alan C Scott April 28, 2008

poopie mushroom 

When a male sticks his penis in a rectum and then proceeds to slap the male/female in the face with his penis, leaving a brown spot what looks like a poopie mushroom.

I was pissed at my girlfriend so I stuck my dick in her butt and gave her a poopie mushroom.

poopie mushroom by headshothummel February 19, 2009

boxer mushroom 

When a guy wears skinny jeans, is wearing a belt, and still has his pants sagging...the big fluffy wad of boxers hanging out of the top of his skinny jeans is the "boxer mushroom."

"That guy's boxer mushroom is definitely not hot. I mean, what's he trying to do? Contain a fart?"

boxer mushroom by crystaloney April 21, 2010

Shitaki Mushroom 

It's just another word for saying shit if your young and not allowed to cuss. Or your parents think your proper and your actually a fuck up.

Ooo sssssshitaki mushroom

Shitaki Mushroom by Lele_742 December 13, 2016

Pocket mushroom 

When someone has an erection and to keep it from showing you hold the tip of your dick through your pocket

This pretty girl bended over in front of me at work today I had to hold my pocket mushroom for hours

Pocket mushroom by Joey 240 December 18, 2016

portabella mushroom 

When a guy presses his cock on a mirror and says "I want to be a steak", this is a portabella mushroom

Boink...."ewww....I wanna be a steak"

portabella mushroom by slutties_chix_on_met April 24, 2005

green mushroom 

Something one says when is given an unexcpected bonus.

Joerge not only gave me his stereo, but 5 CDs as well. So that was a big green mushroom.

green mushroom by Miyamoto October 10, 2005