Top Definition
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"
by slutties_chix_on_met April 24, 2005
the foreskin of a penis flarign out wide to make the penis resemble a mushroom
that chick made me flare up like a portabella mushroom all day
by james howlett March 23, 2004
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.