If you happen to work with any vegetarian ladies for the love of all things holy don't allow a discussion to start about Brazilian "All the meat you can eat" restaurants.
Sooner or later someone will ask the inevitable question and she'll respond "I'm a vegetarian, I don't put meat in my mouth" followed by much tittering and innuendo from the children in the office.
Guess we're not chancing the Brazilian place for the works Xmas do...