Rollercoasters are fun, right? Wrong. This one is terrifying and sits on the back of a truck.

This rollercoaster, which was uploaded to YouTube by Rolf Zemp and is purportedly taken at a Swiss carnival, looks like a fasttrack to a broken neck.

Consisting of one loop, it's about the most briefly nightmarish thing on rails we can imagine.

Watch the full clip, below:

Lets get the gif replay on that one.

Oh.

God.

Why.

H/T Digg