Skateboard
There was a point when David took up the sport to test his skill. He could ski pretty well. He wanted to snowboard but his mother required him to don a helmet. So he opted to skateboard. She did not know he needed a helmet for this too. I have to admit that David got the hang of it and could do some nice tricks. Basic things, but he was skilled enough for me to be impressed. And of course I was around to get some images. Look ma, no feet (on the board).