It really surprised me! She was being "naked girl" after her bath, running all over the house, squealing with delight. She likes to get up on the bed, roll around, bounce, stand up and fall straight back, etc. while she is being naked girl. Last night, while she was standing up, she bent over and put the top of her head on the bed. She did a couple of trial runs, unsuccessfully, then over she went! A perfect somersault!