I enjoy this sort of guessing other people's guesses (not second-guessing, but guessing squared). I think of it as Family Fortunes despite never having seen the show.

jiggery_pokery once asked a question along the lines, "If you were meeting someone in [New York|London|Paris|Munich], but neither of you knew where the other would be, where would you wait?" which is a roundabout way of asking for a Common Answer.