I'm a big kid now!

Preston is off and crawling and thinks it is so cool that he can pull himself up onto things! I put him down for a nap and I can hear him in there grunting and the next thing I know he's pulled himself up onto the crib. He just stands there with a big huge smile laughing almost as if he's saying "ha ha mommy!" We have to laugh. It's pretty cute but it's frustrating when he won't take nap!!!