Top Definition
a person who is only a bitch half the time.
usually this person is a girl, and seems nice at first, then drastically changes depending on who is in the room.
Person One: "Jessica is such a nice girl."
Person Two: "I'd watch out, she's a bi-bitch. She's only nice when you're around her."
#bitch #mean #bitchy #half #change
by deaaana February 21, 2009
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