A woman's vaginal secretions, associating a woman's vagina to a clam, and the secretions that come out of it, being jam.
"man that broad I did last night had some thick ass clam jam."
by dudu September 17, 2003
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The female equivalent of the cock block, but amongst two girls who would like to get it on. A much more graphic term to use than box lock.
Trent is hanging out with a bunch of his lesbian friends at a bar. One of his friends' name is Lily.

Lily: That girl at the bar is so hot. I'm going to go hit on her.
Trent: No, I'm cranky. Let's go home.
Lily: Ok fine.

Trent has just clam jammed Lily.
by Candyce February 14, 2008
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"I was talking with this cute girl and this dyke came up and totally clam jammed me."
by Captain Zero March 22, 2014
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The feminine version of sausage fest; a crowd where there is a higher percentage of women to men
"Damn, look at all those girls over there. What a real clam jam."
by onholiday6 November 4, 2009
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When a girl cancels a date due to having the Corona virus
I thought we really hit it off. Today she tells me to keep away she has the Corona virus .

She just got Corona clam jammed
by zerocover March 9, 2020
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1. A social event, increasingly popular amongst women in their mid to late twenties. Two or more women of the lesbian orientation will simultaneously and continuously ram into each other at top speeds resulting in serious injury.

2. An exclamatory phrase, usually shortened to just: "clam jam!" used in situations of extreme euphoria or frustration; rare cases of both at the same time.
" EF'ING CLAM JAM!!!!"

"what's wrong with sheila?"

"she's recovering from this weekend's Lesbian Clam Jam"
by greymaz April 13, 2009
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A dose of semen that has been extracted from a vagina with a vaccuum cleaner hose after it has been left to frement for at least 24 hours.
You'd better get that out of there before it turns into clam jam.
by CYPHER9x9 May 19, 2011
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