Shitaki Mushroom Stamp 

(verb)Latin. It is when a man has anal innercorse. After which the penis is pulled from the anus and Stamped on the head of the receiver.

All women need a Shitaki Mushroom Stamp the keep in check.

Shitaki Mushroom Stamp by Jason foeler (The Shank) May 5, 2005

Mushroomhead 

I am adressing the conflict between mushroomhead and slipknot. first of all about the mask issue NEITHER BAND COPIED THE OTHER!!!!! THEY EACH CAME UP WITH THE IDEA ON THEIR OWN!!!! Both bands are so different you can't really compare them slipknot has taken a more hardcore and aggressive approach where they are always serious in their songs. mushroomhead has a slower more gothic feel and ironically do incorporate some humor into their image. The fact is that if you like mushroomhead there is a 90% chance you are from Cleveland because they are less popular than slipknot. If you like slipknot you are looking for more thrash like stuff.

Guy 1:did you hear slipknot copied mushroomhead.
Guy 2: (bitch slaps him) what the fuck is wrong with you slipknot had never heard of mushroomhead when they chose the mask idea.

Mushroomhead by superninjapenguin December 14, 2008

Mushroom 

Some majorly evil things. Work a lot with garden gnomes.
Watch out for them.

"Oh God, RUN AWAY FROM THE MUSHROOMS !"
"Yes ! They stop the happy noodles !"

Mushroom by Ashiezorz September 3, 2007

Dirty Mushroom 

When a guy takes his hard dick, after having anal sex and swings it as hard as he can, hitting a person (hopefully a girl) on her cheek with his penis. If done correctly it will leave a mushroom imprint for several minutes with a lasting red spot afterwards and a nice brown mushroom stain.

That stupid bitch pissed me off so I stuck it in her ass and then gave her a nice Dirty Mushroom

Dirty Mushroom by zack dazuk July 7, 2011

mushroom taco 

an extremely ugly girl that looks like a man

"seriously dude, why are you dating that mushroom taco?"

mushroom taco by skyman235 April 1, 2010

Mushroom Fart 

A fart so concentrated and large in magnitude that it explodes through your pants and Fus-Ro-Dah's any object within 200 feet, leaving a dangerous amount of fart radiation on the area for years which gives people asskemia.

1. Did you hear that Josh let out a Mushroom Fart on his date last night?

2. In 1945, two obese Americans Mushroom Farted in Hiroshima and Nagasaki and gave many Japanese people asskemia.

Mushroom Fart by Kearemme August 16, 2014

Mushroom Surprise 

The act of sneaking up on someone and slapping them with your penis hard enough so that it leaves a "mushroom" type bruise.

God damn that mushroom surprise hurt.

Mushroom Surprise by Bill45421 May 22, 2006