You've got to understand that the book Dylan is reading is an Encyclopedia Brown book which I guess was one of my Dad's favorites growing up. So seeing these two together like this really made my day.
Earlier in the day, Dylan was sitting on the couch reading through one of my Calvin & Hobbes books laughing his ass off. THAT made me smile too because I've done that many times myself.
Being a Dad is a pretty damn cool thing. Especially when you see a lot of your silliness in your son.