As seen in the intervals between fields of dancing badgers.
by Kung-Fu Jesus June 7, 2004
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1. Computer industry term for a programming primadonna with no social skills.

2. One who prefers writing code and/or administrating servers from a dark closet, whom is only to be bothered when someone has shit to throw at them.

3. An asshat with technical prowess that makes them hard to fire.
He's a damn good Unix admin, but he's a bit of a mushroom. If you don't want a condescening answer, there'd better be a server fire.
by irritus December 2, 2004
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A mushroom is normally a girl (possibly a guy) with short hair shaped like a mushroom.
Sonia's new hair cut makes her look like a mushroom
by hehe sonia <3.. February 11, 2010
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A mushroom is an enormous/fat human being with a head shaped slightly abnormal, and a hairstyle which seems to differ from others and resembles a particular type of fungus/mushroom,and their nose seems to be physically misplaced and gigantic.(sometimes it may seem slightly crooked)
by alistar March 12, 2005
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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 !"
by Ashiezorz August 27, 2007
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When about to ejaculate quickly shoot your load in the sexual partners hair which will create a wetsticky surface on the persons hair which is similar to the top of a moist mushroom like one you might find in a pleasent area of english woodland

a variation in the word is (shroom hair)
Last night i mushroomed my partner
i Have commited the mushroom on some bird last night

Hah i just gave you a proper mushroom

My Dad just mushroomed your mum

I Mushroomed your wife Last Night
by Mchazzmo May 19, 2009
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A mushroom is guy who is unattractive overall without any redemptive qualities (such as good personality, charisma, sense of humor, smells good). They are just full of cringeworthy qualities such as:
Being painfully ugly
Lacking hygiene
Messy appearance
Typically shy
Arrogrant

If there is something good about him that makes him tolerable, then he is probably not a mushroom.

The female equivalent is a moth.
"God, I hate Charlie. He's ugly, almost obese, rude, and smells really bad."

"Golly Jennifer, why are you even friends with that mushroom? All he does is play video games and avoid daylight. "
by misterxoxo November 19, 2015
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