And this is exactly why you never mess around with those rails. In the above video captured on the CBS broadcast, a Bills fan is sliding down an upper deck rail. There's no publicly known reason for him doing that, but then again there's not a lot of them out there. The shock comes when he flips over the rail and lands on the second-level below. The man was carted away with a shoulder injury, according to Deadspin.

The worst part of it all was how an innocent spectator got injured because of the "jumper"'s actions. The man the jumper landed on suffered a serious head injury, according to the Associated Press. Relax with the foolery on football Sundays, folks.

RELATED: The 25 Freakiest Sports Injuries of All Time 

[via Deadspin]