A son asks his father: "What's the difference between 'potential' and 'reality'."

His father thinks for a moment then says: "Go ask your mother if she'd sleep with George Clooney for a million bucks."

So he does and mom says: "You bet I would!" The boy reports back to his father but still doesn't understand.

So the father says: "Now, go ask your sister if she'd sleep with Brad Pitt for a million bucks."

Off he goes to ask his sister and her reply is: "Absolutely!"

Finally the boy goes back to his dad and says: "I think I get it pop. 'Potentially' we are sitting on two million dollars here... but in 'reality' we're living with a couple of whores."