The cream that shoots out of a guys mushroom at the climax of a blowjob and swallowed - the soup that's mmm mmm good!
While I was with my boyfriend last night, we made a hot dinner and I had his famous mushroom soup! Delicious!
by teeniewahine October 17, 2006

if someone happens to be getting fresh with you, mushroom slap them. This means pulling out your jimmy and making solid contact with their facial region.
C-dav definitely mushroom slapped that girl last period because she said "oh my gosh guys guess what happened?"
by drew s April 12, 2004

by ~Michael~ October 5, 2006

by D3zNu7$ February 18, 2008

by WhiteRebel09 January 14, 2008

When a guy has an erection in the middle of the day, in a social setting, so he uses the elastic in his shorts, or pants, or whatever he is wearing to "tame the beast."
Yo, during math i had some wood, and the teacher asked me to write something on the board, so like a champ i mushroom flipped, and stood up and answered the question
by H. Dot December 24, 2007

When you slap someone with your soft circumcised penis causing a small red mushroom shaped mark on the skin from the head of the penis.
by Aiden07321 June 6, 2010
