Nope, he's not in pain. It always cracks me up that he thinks this is what a smile looks like. I keep thinking why does he think that his eyes need to be squinted almost closed? Then I caught my reflection when someone had made me smile and realized that my eyes get really small and squinty when I smile sometimes. I have always argued that children are an exaggeration of their parents. I believe this is case in point.
See the Little Jamaican? I think that may not even be an exaggerated version of one of my expressions. That is my, "Why would you possibly think it is ok to be mixing my flour and sugar back in forth in the canisters?" look.
As long as I am on this topic, once I told my sister this theory and she didn't speak to me for months. Her son was going through a particularly difficult to parent time. I was half serious, half crackin' a joke at the time. I wonder if she agrees with now.?