rubber oracle
Write YES on one side of a rubber and NO on the other. Ask it a question, then flip it for the answer. Be wary, though, of what you ask, particularly the potentially devastating 'Am I gay?' If you get an answer in the affirmative, you are doomed forever. The rubber oracle never lies.

Mind you, if you are so sexually insecure as to feel the need to ask that particular question, you're probably gay anyway. Again, doomed.
written by excluded pupil, approved by Jamie