Simon's Backside

... is all we see now that he knows how to walk. He will just take off, and if you run up behind him and say "I'm gonna GITCHA!" he will squeal and start laughing. But of course he won't stop moving. I don't know how babies intrinsically know what "I'm gonna gitcha" means when they have never actually been "gotten" in their little tiny lives, but I think it must be similar to the phenomenon that causes Abby to come running into the kitchen every time she hears a plastic bag crinkle, even though she never gets to eat anything that comes out of a crinkly plastic bag. Hmm... strange.