1 definition by Alan C Scott
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