This isn't the funniest one, but I found it to be humorous enough to warrant a chuckle or two. I didn't think I would have another FSMSS entry so soon, but this is what was said this morning on the way to school...
Him: Dad, would you and Mom ever sell me?
Me: What? What are you talking about?
Him: You know, would you and Mom ever try to sell me for money?
Me: No, we wouldn't, but I might.
Me: Actually, no I wouldn't try to sell you, because I would have to pay someone to take you!
Him: (said in a very adult-like, dry, sarcastic tone) gee...thanks.
(yes, he knew I was joking)