Mommy's medicine

Peanut: Why are we going to CVS?
Me: Because I need to pick up a prescription.
Peanut: For who?
Me: For me.
Peanut: Are you sick?
Me: No.
Peanut: Then why do you need medicine?
Me: It helps me be nice.
Peanut: Would it help you get me a blueberry muffin?
Me: Probably.
Peanut: Let's go pick up your medicine.