Top Definition
The female equivalent to the cock block.
If you're familiar with the term "Cock Block," you know that it means one dude messed up another dude's game with the ladies. Well, this happens to girls too. And we (most of us) don't have cocks.

If you've ever been obviously checking out a guy and then your friend decides to "claim" him by walking up to him and touching his polo shirt and exclaiming, "I'm soooo drunk right now omg!"- you've been clam jammed.

If you've ever been hitting it off with a guy and then you tell him his pong game is weak, you've been clam jammed.. by yourself, I might add.
by KateSauce January 27, 2008
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 07, 2009
(n.) - the female version of a cock block; when a girl sabotages another girl's attempt to get some.
"This guy was hitting on me last night and asked me home, but Cara was being super clingy and made me leave with her instead; whatta clam jam!"
by garry larry July 01, 2013
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 17, 2012
When you give your friend a bad nick name so that boys don't talk to her and she ends up alone at the end of the night.
Boy: Hi. What are your names?
Friend: I am Sexy Bexy and this is my friend Steephy Queefy.
Boy: *walks away*
Queefy Steephy: You Clam Jam me every time with that nick name!
by Steephy Queefy March 31, 2013
Female equivalent of a cock block.
"I was talking with this cute girl and this dyke came up and totally clam jammed me."
by Captain Zero March 22, 2014
A new age cover band in central Minnesota
Hey did you see Clamjam last night at the Fineline?
by Mumbo Jumbo dos February 07, 2013
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 30, 2011

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