Originally Posted by gloopy

You should disclose it even if they'll never find out about it. Massive points for honesty, which they are looking hard for anyway, plus it gives you something "negative" about yourself to talk about, on your terms, with a home run ending (the honesty, learning, etc). If you sit there on a pedestal implying "you have nothing on me I'm untouchable" they will look even harder to come up with something.