new trick

after caleb's first nap of the day, i went in to get him up. usually he's on all fours looking up over the bumper, just waiting for me to come in. sometimes he's on his back sticking his little foot through the slats of his crib. but this time, he was sitting up. i have no idea how he got into that position... i've been waiting all day to see him do it again, but so far he's keeping it to himself. what's next? crawling? standing up? walking? college? yikes!