An impromptu gangbang could be fun however I would be concerned about STD's and *******. If a woman is outnumbered 3 or 4 or more to 1 even with her husband/boyfriend present if the males decide to go bareback there isn't much she can do to stop it. If they want to get rough there isn't much she will be able to do about that either. Some things are better off left being a fantasy.Seems the thing about gang bangs is the perceived difficulty in setting them up. So what about the spontaneous gang bang? There are plenty of those. An ex of mine told me she liked to go out to bars mid-week, because guys outnumbered girls 8-1 or so. On the weekends all the pretty girls would come out, and go to battle with each other. She liked the mid-week vibe for a spontaneous happening.