The act of sticking one's asshole against someone or something.
I was about to tongue punch Betty's fartbox while she was straddling my face, but she lost her balance and ended up star stamping my forehead.
by slopass2 October 24, 2013
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The act of accidentally pressing your butt orifice against your partner's lower back or other random body part.
My girlfriend was sitting between my legs in the bath tub, she moved forward so that i could lie back to wet my hair. My ass then slid forward and I gave her the chocolate star stamp on her lower back. True story.
by JefffersonM April 14, 2013
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A grade reserved for the most intelligent of individuals
kitten waffle: "Hoooorrrrraaaaaahhhhhhsssszz, i got a A+ double star Gumby stamp comment."
by Mr. Thorne, but not rly January 17, 2010
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