When I was about 7 years old, I was playing on the swingset in my grandparents' backyard. Since this was around 1981, the slide was pretty much just bent sheet metal, not plastic like they have today. After years of use, a fracture had formed at the top of the slide, and a sharp edge was bent upwards. I had been running up and down the slide (not sliding), and I ran up the slide, turned around, and my feet slipped out from under me. My back landed right on that edge, tearing a huge scar from my kidneys almost to my shoulder blade on the right side. Needless to say, I screamed my head off! Never went to the doctor, but my grandfather did patch me up, which stung even more since that was the era when you put Bactene on everything. Thirty years later, that is still a huge obvious scar.