who are these kids??

otto rolled over on sunday. from his tummy to his back...i thought it was a fluke. but then he did it again this morning. rolled over. ROLLED OVER.
and guess what else he did today? he laughed. otto, greta and i were sitting in the kitchen. i was holding otto while greta sat in her highchair. i was just cooing and gooing at otto as usual, and he started laughing. and then greta and i both started laughing. and then he laughed some more. it was priceless.
so our boy is rolling over and laughing.
our girl...what is she doing? she's saying things like "wait a minute!" and "oh my goodness", and pushing her own cart at the grocery store. she's getting mighty close to putting her clothes on by herself, and she climbs into the car and into her carseat without help. she even moves the straps when she does this so that we can buckle her up easier.
they grow up so fast. truly.