Train Hopping
There was a freight train that ran on the tracks behind my house. My brother thought it would be cool to try and jump on it like in the movies, so I went ahead and tried. I waited for the train. I went up close and tried to run it down as the last car passed. That was a no-go. The train was going too fast to try and catch the last car.
So we waited for the next train. This time, I ran next to the train as the cars were passing and grabbed a ladder to get onto a car. I was successful. I jumped off and tried again. This time when I jumped off, I was facing the wrong way. I slammed my back straight into the ground and ended up with a three-inch scar on my back. Story credit: Reddit/Drunkstrider