mushroom stampin 

To poke a male in the forehead with a penis.

Brett Mushroom Stamped Mark late last night in brett's basement.

mushroom stampin by E-Haw December 26, 2002

mushroom stamping 

The act of pressing the head of ones penis into another persons forehead or other facial area.

As soon as Ben passed out, Jer proceeded to mushroom stamp him to no avail.

mushroom stamping by Snapdragon August 8, 2003

Mushroom Stomping 

An act of mushroom stamping, but with a giant penis, usually to a person being a complete douche. This is appropriately done by slapping said douche in the face with said penis. If correct technique is applied, the stompee will have a giant, dick-shaped imprint on his face.

"Justin was being a huge dick, so Luke mushroom stomped him with HIS huge dick."

mushroom stomping

Mushroom Stomping by YouCanSuckABigOne March 7, 2012

mushroom stamping 

The male act of stamping the penis into an ink blotter, then proceeding to mark an unsuspecting customer with the "branding" of the mushroom tip.

"Yesterday Sam got ahold of mom's red ink blotter and I woke up to him mushroom stamping me in the face".

mushroom stamping by LinzMarie79 July 8, 2010

mushroom stamping 

The male act of stamping the penis into an ink blotter, then proceeding to mark an unsuspecting customer with the "branding" of the mushroom tip.

"Yesterday Sam got ahold of mom's red ink blotter and I woke up to him mushroom stamping me in the face".

mushroom stamping by LinzMarie79 July 8, 2010