The act of forcing someone to kneel down (have them stand if they are much shorter 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.
I performed the Flying Mushroom Stamp on that bitch, dawg!
by Kaj Darkwind May 15, 2010
Get the Flying Mushroom Stamp mug.
Generally performed by cook or some sort backline employee-type. For whatever reasons,(i.e. plate sent back, difficult diner or just don't like someone,) the cook removes his cyclops stick from his britches and strikes a portion of the meal and sends it out to be ate.
"That guy was such an ass, so I gave his mashed potatoes my mushroom stamp of approval."
by Marcoleptic June 22, 2006
Get the Mushroom stamp of approval mug.
NOTE: this move requires a flacid penis. while dangling your dong in front of a woman in an attempt to 'woo' her, you grab the base of your member and swing it in a counterclockwise ninja motion smacking her flush on either cheeck leaving a welt resembling a purple mushroom. in germany this is seen as a sign of affection...in tennessee it will get you killed.
i wanted sandi to know that i was into her...so i gave her a purple mushroom stamp. in return she hooked me up with an award winning clark bar
by DJ KNUCKLES March 8, 2005
Get the purple mushroom stamp mug.
While in the act of doing a mushroom stamp, you jizz(explode) at the same time.
Do the exploding mushroom stamp to your mother
by kuter punch February 28, 2009
Get the exploding mushroom stamp mug.
The mark or bruise left after slapping a girl forcefully with your dick. (Usually after oral sexual intercourse)
Guy 1: Dude! Look at your girlfriend's face!!

Guy 2: Ohh yeah, thats nothing just mushroom stamped her last night. No biggy.

Guy 1: Holy fuck man! That had to hurt!

Guy 2: Yeah, just at first.

(Both laugh)
by MattDiver March 6, 2011
Get the Mushroom Stamp mug.
While having vaginal intercourse with a female who is currently going through her minstrel cycle, you remove your penis and violently smack it on her forehead. This action results in a red mushroom like stamp on the females forehead.
Craig Boggs is a true dogg! He was banging this chick last night and he gave her a bloody mushroom stamp! Doubt she ever calls him back.
by Ithemrwes November 25, 2015
Get the bloody mushroom stamp mug.
After fucking your chick (or dude) in the ass, you pull out your dick and slap her (or him) in the face thus giving them a shitty mushroom stamp hence the chocolate mushroom stamp.
My chick loves chocolate so I fucked her in the ass pulled out and smacked her in the forehead with my mushroom tip leaving a glorious looking chocolate mushroom stamp. I never had anal sex with her again :(
by Alan C Scott April 28, 2008
Get the chocolate mushroom stamp mug.