Here's one from a fellow Pastor's wife that really cracks me up!
When older dear daughter was about 4, our VCR broke. We explained to her that the heads were dirty and we just needed to get it cleaned. Later we were having dinner with another pastor and his wife when dear daughter said to them, "Guess what? Our VCR is broken." "Oh really?" they replied."Yeah", she said. "It's from watching dirty movies."