What does Mom know?

So today while we were eating oatmeal for breakfast this is the conversation that took place.

Kimball: I need more brown sugar.

Mom: No you don't need anymore brown sugar.

Kimball: I need some right here. (Pointing)

Mom: I can see that there is brown sugar there that has just soaked into the oatmeal. You don't need anymore, you have plenty.

Kimball: How do you know? You are not a cereal expert!