A girl that is into roadfags because she can talk to them about bikes and clothes while they shave their legs together, etc.
girlfriend1: hey girlfriend, wanna go out for a mountain bike ride and have beers after?
girlfriend2: i can't i'm going on road ride, in my new all-white kit, with the guys.
girlfriend1: You're such a roadfag hag when are you gonna hang out with the girls??