the mark left on ones body when smacked with the head of a penis.
I smacked my dick on her forehead and left a mushroom stamp on her.
Dipping the head of your penis into ink, and using the head as a stamp.
"Hey bro, did you see how wasted Steve was last night?"
"Yea! I gave him a mushroom stamp on his cheek!"
When throwing a fried mushroom at someones head and it explodes. The hot grease leaves the impression of a mushroom on there face
Wow did you see Seth Pittsburgh mushroom stamp Jason last night at the bar
A mushroom stamp but from a guy with a small dick
Wang gave me shiitake mushroom stamp when he slam his tinkie winkie on my forehead
When you smack a bitch with your dick and it leave the outline of your dick. The Mushroom Stamp
I met this one hoe so i gave her the mushroom stamp.