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Noun: A woman, typically in her 20's, that proceeds to commit lesbian acts while in a party situation. Inebriation is a common excuse for party lesbian behavior in generally heterosexual women.
Guy 1: Did you see those chicks making out last night?

Guy 2: Yeah! They're totally party lesbians. Didn't they leave together?

Guy 1: Dude... do you think they scissored?
by McSantos May 01, 2009
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