This is a video of a man performing 27 flips down a sand dune in 25 seconds. That is a lot of flips. I would have definitely puked afterwards. Or, much more likely, somewhere in the middle. And that’s assuming I don’t sprain my ankle on the very first flip.
Because apparently some people do more with their friends than mindlessly drink and watch television, this is a video of pro BMX rider Scotty Cranmer and buddies trying to front-flip a roller coaster bike (which I actually invented when I was four or five) down some stairs. It’s a success.