Why I love being a dad

Christian: Chocolate and milk go together. When you mix milk with chocolate, you get chocolate milk.

Me: Actually, Christian, bananas and peanut butter make chocolate milk.

Christian: Huh?

Me: That's how you make chocolate milk, you mix bananas and peanut butter together.

(He pauses for a few moments and studies my expression to see if there's any hint of deception)

Christian: Are you joking?

(I just smile)

Christian: You ARE joking!