Oil

We were driving home and Wonderful Husband and I were talking about getting oil for the car.

Sweet Daughter: "Why does the car need oil?"
Wonderful Husband: "To keep the engine lubricated so it can work smoothly."
Sweet Son: "Like the lubrication in ball and socket joints in your body?"
Me: "Yes, exactly like that."
Sweet Daughter: "Is it the same oil that we cook with?"
Wonderful Husband: "No, that's a different type of oil."
Sweet Daughter: "That's good."

I love the connections they make to many different areas. :)