Letter S

Nathan came home from church tonight, sat on the step in the living room smiled and made a "SSSSS" sound. He did this over and over. I wondered what he was doing, but went about what I was doing. Then, I looked from across the room and saw it. His train track was in the shape of the letter S! I couldn't believe that they could possibly be related. I told Tony to get out a piece of paper and write a letter S. We asked him what is this? He smiled again and said "SSSSSSSSSS!!" Crazy..!! Just crazy! I'll have to ask his therapist and siblings if they taught him this, but I suspect he learned it from an alphabet video he's been watching. He's been very interested in the letter J and he knows the letter B too. Funny boy.