(noun)the female equivalent of a Cock-Block; a person who interferes with a woman's chance of getting laid, lucky, or boned; generally the "ugly friend" or "previously rejected."
(verb) to block a female from getting sex.
also Clam-Jammy (adj) describing a person with nookie blocking qualities, who may pose a threat to other men-seeking women.
"Jane, you are a bitter Clam-Jam! That guy was incredibly hot, and now he's gone!"
"That Clam-Jam may be five-foot-ten, but I have the Kama Sutra memorized and he'll never know."
"I am going to Clam-Jam Samantha, because that nasty wench spilled my drink and flirted with my boyfriend."
"There is a very Clam-Jammy cougar leaning at the bar, and I'd like to cut off her stilettos with a nail file."
by Colleen E. December 30, 2008
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event where there are far more ladies than men in attenendce: female equivalent of a sausagefest
dude , you gotta get down here ...it's a clam-jam!...wall to wall ladies.
by seanie_b September 16, 2012
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The female version of a sausage fest. A gathering of only women.
We need some guys up in here. This is turning out to be a clam jam.
by poopsie1987 February 7, 2009
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The miscalculation of distance and/or location of the vaginal opening during rigorous sex which results in the penis slamming against the outer labia or groin.
He drove in deep but missed his mark, resulting in the mother of all Clam-Jams that left him writhing in pain.
by Gottaring January 18, 2012
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A reunion or aggregation of people with an overwhelming ratio of women. The feminine equivalent of a "sausage fest".
Luke is such a charmer, his birthday party was a total clam jam
by Arnaud_OC May 31, 2011
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one who prevents a female from scoring sexually.
Don't clam jam her, Christina is trying to hook up with him.
by Xtina1925 June 7, 2010
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Large group/party consisting primarily of vagina. I.e., equivalent to the male version "sausage fest".
Person A: So, how was the shin dig?

Person B: It was a total clam jam!
by Booka88 June 21, 2010
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