I thought they melted in your mouth, not on your face...

We gave Zoee a little bag of M&M's. If you can't tell, she really liked them. She liked them so much that she wanted to smear them all over her face. It was really funny. She came walking in the kitchen and had it all over her face. We started to laugh and then she got really embarrassed and started to cry. It was really funny. Is it ok to laugh when you kid cries?