Part of what's fun about having a baby is that it's like having your own personal doll to experiment on. Lately Peter's practicing rolling over although he can't quite do it, he likes to flip onto a side or be on his stomach and then fall onto his back. He will lie on his little round stomach and kick about like a frog on cocaine, or on his back he will thump-thump-thump on the floor like a horse kicking in its stall. I can sometimes hear the kicking on the other side of the house.
He also likes sitting up with our help and he can sometimes sit for a few moments until he flaps his arms or something and falls over, thud. It's fun to do on the bed because he can't hurt himself and has a rather stunned happy expression at suddenly being on his back again. Wheeee!