Extreme snowmobiling
Click above to watch the video after the jump

Thank God for crazy people. They're the ones who give us the best YouTube videos. To wit, after the jump, you'll see a couple of Icelandic snowmobilers with a lot of confidence and an unhealthy lack of fear showing off their winter-edition "Jackass" skills.

The pair ride their sleds into a local reservoir featuring some incredibly steep concrete walls for a bit of "fun." The video starts out slowly enough, until the first guy drives his snowmobile up the side of a 30-foot cliff. Impressive, if not foolhardy stuff. The next guy decides to top his pal with a move that would leave Einstein and Newton scratching their heads. We aren't sure if we want to send him to a psych ward or present him with a Liberty Bell-sized set of Truck Nutz. Hit the jump only if you're fully prepared to be stupefied.

[Source: YouTube]