the mark left when one hits their partner in the face with their dick after thuroughly buttsexing them and having a poop covered dipstick, leaving a mushroom shaped mark on their head from the remaining fecal matter.
by Ramboyantone March 07, 2007
by mushroomstamp1304 September 17, 2013
the act of pushing the tip of your own cock into your anus - just slightly - thereby inking your tip - and then imprinting the mushroom image onto said victim
by Snarfley McFookenhagen December 20, 2006
A variation of teabagging where the bagger first marinates his undercarriage in a viscous substance such as barbeque sauce or ketchup. The goal is to leave a mushroom shaped mark on the victim.
by lakedaimon@comcast.net November 25, 2006
by Fo T Wada February 23, 2008
Using the head of a penis and smacking someone in the face leaving behind a mark in the skin that looks like a mushroom.
My friend fell asleep so I gave him a mushroom stamp;
I gave my girlfriend a mushroom stamp during a BJ
I gave my girlfriend a mushroom stamp during a BJ
by OuttaSight OuttaMind December 26, 2011
by lovedthetowels October 15, 2009