clam fest 

A social gathering that involves many females. There are only a few males present at a clam fest, thus making them more appealing to the abundance of females.

oh man! erik, you totally should have come to that party last night! it was a clam fest!

clam fest by Ryan June 18, 2004

Clamfest 

The antithesis of a sausagefest. A social engagement catagorized by high levels of estrogen.

Man, lets ditch this clamfest. If I wanted to hear people talk about the The O.C. I'd hang out with my little sister.

Clamfest by Eric Greif October 5, 2005