When a female sets her genitals on a person's forehead; commonly performed after the receiver has passed out. This event is often photographed and used for future embarrassment.

Opposite of the mushroom print.
Yo....Christopha passed out and got hit with a clam stamp form Tammy. He's going to shit when we show him the pictures.
by Mr.Reno April 25, 2007
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The Female equivalent to "T-Bag"
A gaming term used when humiliating an opponent by crouching up and down on there dead pixilated body.
Dude I was playing Black ops last night and this chick clam stamped me after she no scoped me.
by DeathTemptress April 14, 2011
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To gently place your vagina on you sleeping partner's forehead in an effort to leave a short-term, sloppy impression. When your unsuspecting guest identifies the smell and warm sensation on their forehead you say, "You've been stamped!"
Like a snail, Lynn mounted John's head and left a wet, sloppy clam stamp.
by Lady Godsmack September 4, 2010
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When a Woman presses her damp clam on your pants and lives a clam imprint (clam stamp)
"Dude that stripper left a clam stamp on your pants"
by sirstampsalot August 7, 2020
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The act of slapping another with your vagina. Usually done in retaliation to a mushroom slap of some sorts. Usually a sticky mess.
"Stina really showed her boyfriend who's boss last night, she clam stamped Danny all over the face! See if he ever fadunks her again!"
by pussypunch December 22, 2009
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When a female on her period presses her bloody vagina to a persons forehead.
I woke up this morning only to see a clam stamp on my forehead.
by The real Finger June 8, 2009
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the female equivalency of tea bagging. (v) to clam stamp.
I gave that drunk passed out guy one helluva clam stamping...right on his nose. vagina tea bagging
by rysky October 1, 2014
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