Female version of TeaBagged.

A female pulling down her panties doing a up and down motion over your face, each time touching your mouth/face when she does the down motion.
Ms. TNT clam slammed me when I was laying on the ground motionless!
by droopie April 8, 2009
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When two women aggressively rub their vulvae together during sexual intercourse.
"Stacey, do you want to go to spinning class with me?"

"No way, I was up all night clam slamming with Melissa, and my crotch is on fire."
by Emily Jo Ann March 23, 2010
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When one famale is to 'slam' their vagina against another persons forhead.
"First one asleep gets a Clam-Slam from Kayleigh".
by Icemang80 August 18, 2009
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1) I am totally going to clam slam her while she's sleeping.
2) You guys going clam slamming on Sunday?
by bizzy mark March 9, 2008
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1. (v.) When one female prevents another female from scoring on a professional and/or personal level.

2. (v.) Female equivalent of cock block.

Synonyms: Twat swat; clam dam; clam jam (not to be mistaken for rag).
I was just about to close the deal when she cut in, cut me off and clam slammed me so hard I got whiplash. So...I punched her in the vag.
by foschizzlemanizzle June 6, 2010
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Clam Slam is the female version of a “teabag

Primarily used in video games as an insult or to piss people off after a kill or a win.
John: why did you Clam Slam that guy?

Maria: he deserved it, asshole was camping the whole game.
by BigDaddyDagger October 3, 2021
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Picking a Female up by her vagina and brutally slamming her into the ground. Also known as a pussy piledriver.
Sam: Dude your friend was pissing me off, so i had to Clam Slam Her
Jake: Its okay man, Should of thrown a kettle at the bitch
by Motherphuck July 7, 2011
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