My late Aunt Ava Nell (then 80-years-old) was excited to see us visiting in Colorado. She attempted a conversation with my then 2-yr-old, Christine, who was acting shy and sucking her thumb while observing the room.
Aunt Ava: “Christine, what is that in your mouth?”
Christine (after removing her thumb to speak): “Teeth.”
I can still practically hear Aunt Ava Nell’s laugh. 🙂