Mrrzy, Isaac Asimov wrote a series of stories about a men's club called the Black Widowers. They would sit at dinner and solve mysteries over brandy and cigars. Well, actually the butler would solve the mysteries for them.

Anyway, their mysteries came in the form of invited guests and the sentence I used in my first post ("Tell us a little about yourself and how you justify your existance.") is how they would open the discussion with the guest.