Clearly these guys have too much time on their hands, but it looks like they put some of it to good use because this sounds awesome!
ALSO BEING VIEWED:
Best wear your safety helmet when watching UFC 165 — the light heavyweight title fight between Jon Jones and Alexander Gustafsson is so big, your head might just explode.
You think you would be checking your altitude regularly when skydiving. This is a very close call.
If you can’t actually do flips and tricks in real life, apply a bit of video magic.