If you've never heard of parkour, it's basically when someone jumps and swings and flips on things like brick walls, cement steps and metal railings. Crazy, right? And people only use their superhuman skills to pull off these stunts; no equipment is allowed.

So let's think about this-- if you're rolling down cement steps or trying to leap over a car, things can't always go smoothly, right? Naw, man! Fails are everywhere in the parkour game, and we have some cringe-worthy GIFs to prove it. This is basically a warning to stay far away from parkour, although these brave efforts are super impressive. Ouch.