This girl's insane backwards fall off a railing was captured on Snapchat

Annie, are you ok?

It's impossible to watch this video without recoiling in horror. We can't believe she walked away from this.

Annie Schwenker, 17, was on a cruise with her friends for spring break last April when they decided to Snapchat their attempt at sliding down the railings of some stairs outside a nightclub.

The clip has since gone viral after Annie's friend Maddie tweeted it - with her permission.

It starts off okay but just as one of their friends shouts "Annie, don't fall", Annie - who is attempting to do it hands-free - takes an almighty tumble.

Ouch.

That's a tough watch. Which we can't stop watching.

The teenager told Buzzfeed that she was surprisingly okay considering - she bit her lip and had the wind knocked out of her as she hit the railing below. Her pride was also hurt.

“It’s actually more embarrassing that I was sober because if I had been drunk it would be much more goofy. I only fell because I was stupid and let go with my hand which you can’t do when you’re railing surfing," said Annie.

“I was only one flight from the bottom of the stairs. After I hit the railing, I stood up right away and walked up like half a flight of stairs to where they were standing and kept saying, ‘I’m fine, I’m fine.’”

After taking the requisite time to laugh at their friend's misfortune, the girls continued on to the club. Annie then began to feel worse as the shock wore off.

“I was in a lot of pain, but I didn’t cry right away because I was in shock from having the wind knocked out of me,” she said.

“I went back to the club and we were dancing, and then once the adrenaline calmed down, I started crying on the dance floor because it hurt so bad.”

She went to find her mother who had travelled with them and the next day, visited the doctor. There, it was discovered that she had also fractured a rib.

So not great but at least she didn't die:

“Everyone thinks I’m dead, so I’m glad I can just tell people I’m still here… I would probably go railing surfing again, but I just need to make sure to hold on with both hands next time.”

Please don't, Annie. For the sake of our nerves.