What do you mean you're not supposed to eat paint?

I was in the kitchen cooking dinner and it was awfully quiet in the house (with 2 little kids quiet means there is someone getting in trouble). I peak out the doorway from the kitchen to the living room and there I see my two kids have emptied the cabinet we keep the crafts in and Michael is eating blue paint! Of-course all paint in the house is crayola non-toxic paint so its not going to hurt him but what a mess!