That's what I thought.

Harmonie came in from playing outside. She very matter-of-factly stated, "I ate sand."
Me - Yummy.
H - No. It not yummy. It yucky. It not food.

Well, that's what I thought, but she was the one who decided to eat it so I'm not sure what she was thinking. At least now she knows that it isn't yummy and maybe she won't eat it again.