Jonah: Mommy, I learned what the bones inside your body are called.
Me: You did? Where did you learn that?
Jonah: At school. My teacher telled me.
Me: What are they called?
Jonah: Umm...(long pause) I can't remember right now.
Me: A skeleton?
Jonah: YES! A skeleton. But, she did not have an xray machine to show us. If she did, we could really learn stuff like that good but I just forgot it. That's because she doesn't have an xray machine.