A Joke From Mom

Mrs. Kohler:

2 young brothers are in a convenience store. They bring a box of tampons up to the cashier. The man behind the counter says, "Boys, do you know what these are?"
The older boy: "No."
The cashier: "Are you buying them for your mom? Your sister?"
The older boy: "Nope."
The cashier: "Then why on Earth would you want to buy these?"
The older boy: "I'm buying them for my brother. On the box it says 'you can swim, ride a bike, and play tennis.' He can't do any of these things!"

She heard this joke in church.