Watch This Insane World Record Slacklining Run [Video]

There's no way you'll make it through this video without clenching your butthole.

Theo Sanson recently set a new record in slacklining by walking 500 meters between two rock formations in Utah over a canyon. That's a hell of a long way to walk on a bendy and unstable rope at a deadly height. A simple equipment failure would result in certain death, and yet he walks the line seemingly effortlessly. This kind of thing takes balls of steel when the distance is 10 meters, let alone 500!