Move over Japan. China is making huge strides in the field of weird and wacky. Check out this crazy bicycle with a pentagonal wheel on the the front and a triangular one on the back. It was developed by Chinese inventor Guan Baihua who believes that people will want to ride the bike because it requires more effort than a conventional bike, and thus provides a greater workout for the rider.

Alternatively for those of you who can’t order one of these bad boys all the way from China, you can try peddling a regular bikes with the brakes on.

As silly as it looks and sounds, there might actually be some intelligence behind this crazy bike. The edges are not straight, but rather bent in such a way that the diameter across both shapes is the same no matter where it is measured.