Unimoto Drag Races!

Crazy one-wheeled contraptions race on dirt in Arnsdorf, Germany

This is one of those insane sports that comes from the perfect combination of boredom, booze, and a spare motorcycle with no front end. But watching the video, you'll see there's a lot more to this than taking off the forks and putting some skis on the back. The bikes with too much power flex the brakes on the skis and hardly get any of it to the ground. The skis on the front range from one massive rounded piece of metal to two tiny little flat pieces extended wide.

We love this sort of thing and hope people come up with way more sports and activities that involve customizing motorcycles to do things that serve no purpose other than having fun.

Thanks Umeili for the video!