About the Pinnochio comment, remember that the converse is not always true. Lie => nose grows, not nose grows => lie. So, by saying, "My nose is about to grow," Pinnochio is basically guaranteeing that it does. If it grows, it grew on its own accord. If it doesn't, he will have lied and it will grow from that.
Of course, the statement "My nose is about to grow" is pretty subjective anyway. I've been told that the human nose grows for the duration of a person's life. Technically, all our noses are growing right now as you read this--unless you don't have a nose, like Michael Jackson, in which case I'm sorry.