We carpool with another family to and from school each day; they have a daughter, age 10, and a son, age 8. They generally sit in the backseat with Payton. This morning, in the rear view mirror, I noticed all three of them sniffing their armpits. Then........
Payton: Mom, what is BO?
Me: It's body odor. It's how you smell when you forget to shower.
Payton: Oh okay. Mom, I think I have BO.
Payton: Would you get me some "detergent" so I don't stink?
Me: Sure, son. You can rub some Tide under your arms every morning. That'll do the trick.