A lesbian so closely resembling a gay twink that one cannot often differentiate the two in dim lighting.
Characteristics include: flat chest, spiky bleached hair, generally androgynous qualities.
Gay Guy 2: "That's not a twink."
Gay Guy 1: "Um, yes it is... hot little gay boy... right?"
Gay Guy 2: "Hah! No, that's a twesbian, you idiot"