Top Definition
A girl who claims to be bisexual, but has no real interest in a relationship with a girl. They just want an excuse for more sexual encounters.
Person 1: "Dude, did you hear she's bisexual?"
Person 2: "Nah, she's just bivaginal."
Person 2: "Nah, she's just bivaginal."
by tattertxtot
October 10, 2011
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