A girl who, while not a douchebag herself, hangs out with, sleeps with, and/or dates d-bags at d-bag bars, insisting that they're the best/most fun. You know, like a fag hag, but with horrible douches instead.
Greg: Is Jan coming out to the SuperCoolAwesome Bar tonight?
Bobby: No, she's down at that FratCrapShack... again.
Greg: Damn, why's she gotta be such a d-bag hag?