Why so sad?

Have at last had the opportunity to go through my photos as my visitors have gone home and the house is back to normal. This is a photo of James taken at the night market in Guardamar. He had just had a whale of a time in the fairground and had eaten a huge candy floss, hence the pink sticky residue round his mouth. Don't know why he looks sad, however not long after this he was hyper as a combination of a can of coke and the candy floss sent him on a sugar rush, couldn't keep him quiet for ages. My fault, will know better next time.