1 definition by Bet you thought I didn't know.
A girl, usually a brunette, who will act like your best friend until she finds someone more popular than you. Then she will ditch you, completely change, and then call you randomly and act like your best friend. You will want to scream at her and call her every name in the book, but you won't because,secretly, your glad she still thinks of you ever.
by Bet you thought I didn't know. November 20, 2011