The next sumo?

Every time Isaac gets his diaper on after his bath he always stands up with his legs spread apart and scrunching down. I tried to get a picture of him doing it, but this picture doesn't do it justice. It is so funny when he does that. He only does it for about a minute, but it is pretty much every time I put a diaper on him after his bath. He must not like the feeling of the diaper at first. Who knows. It is just funny looking.