The Slapping of an erect penis aginst a womens face or ass.
After cumming on her titties, i mushroom stamped her ass!!!
by WhiteRebel09 December 24, 2007
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To leave an impression of ones penis on another persons skin(Face preferably). 2. To Dick slap.(really hard)
The hoe was back talkin so i mushroom stamped her across the forehead
by don weezy July 12, 2006
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An imaginary outline left by slapping one’s magnum dong against the face of another.
If you gave Lady Gaga a mushroom stamp, you'd be using your dong to poker face.
by Rationalize October 3, 2011
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Verb: The act of pressing one's penis to a person's face, leaving a mushroom-shaped mark, with semen.

Noun: The mark left from being 'mushroom stamped'
v: Dave Mushroom Stamped Debra, after whacking off on her curtains.

n: Debra went to work today, not knowing she had a mushroom stamp on her forhead.
by Taichi January 26, 2005
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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".
by LinzMarie79 July 5, 2010
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When you take mascara from a girls purse put it on the end of your dick and stamp their forehead while sleeping because your to drunk to jerk off on her face.
That chick I went home with last night wouldn't put out so but I was whiskey dicked so I Mushroom Stamped her face.
by neversummer October 30, 2009
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