Okay, here's how it works. I ask a question--any question at all. The next person in the thread answers it, and asks a new question for the person after them to answer.

Couple of rules:

1. No off-topic posts--they screw up the game.
2. If you answer a question too slowly and someone beats you to it, edit your post to answer theirs instead of the one you previously answered. Too slow, too bad.

Okay, here's the first one:

If your life had an undo button, but you could only use it once, when would you use it?