I'm not heavily tattooed or a biker, but I do hang out in dive bars from time to time -- sure rather do that than go to a charity dance. No offense to any charity-dance frequenters on this board!
Your explanation makes sense, too, David. On the other hand, I don't think we need someone with head-to-toe tattoos to prove the bar is divy, any more than we need her to show us Cassie is attractive. The extra is still unusually conspicuous.
I'm going for answer C, all of the above.