I've been invited out with a group of friends, we don't see each other very often, but get on well and we usually have a great time when we get together. The issue is, the event is one of those 'ladies evenings' at a local restaurant, with 'butlers in the buff'. I can't stand this sort of thing and think they wouldn't be so keen if it was their DHs going out to be served by topless young women. How do I get out of this without unintentionally insulting them?