Going over to someones house, dick slapping them, leave a mark, then take a picture, and send it to the makers of C.O.D. and have the caption say "HEAD SHOT".
by ababyliebe August 25, 2010

(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.
by Jason foeler (The Shank) May 5, 2005

guy 1- dude why are you holding a dildo???
guy 2- to smack you in the face.
Random hobo- ARTIFICIAL MUSHROOM STAMP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
guy 2- to smack you in the face.
Random hobo- ARTIFICIAL MUSHROOM STAMP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
by Venix13 January 11, 2010

The act of forcing someone to kneel down (have them stand if they are much taller than you), then removing all your clothes, and getting to a good distance. Once you have achieved the desired distance, you then run and jump, swinging your hips causing the head of your penis to slap them in the face, leaving a bright red imprint shaped like a mushroom.
Please exercise extreme caution when performing the Flying Mushroom Stamp. Serious injury may (and often will) occur.
Please exercise extreme caution when performing the Flying Mushroom Stamp. Serious injury may (and often will) occur.
by Kaj Darkwind May 16, 2010

when a gay male slaps his penis on the forehead of another male, marking him as his sex slave with a mushroom-shaped mark.
by Skippy1970 July 23, 2012

by Coochie eater 69 April 29, 2019

When you hold back your cock and let it go to hit someone in the forehead,thus leaving a mushroom stamp
Back off before I hit you with this mushroom stamp
Sorry about the mushroom stamp, hope your dad doesn't see it
Sorry about the mushroom stamp, hope your dad doesn't see it
by BMF Bradly Michele Farts September 14, 2016
