Yeah, I had my face shredded and semi-flayed when I was in-between first and second grade, so when I was around 7, maybe 8. I was in Indiana, and my aunt had this treadmill. When I was young, I loved Sonic, and so liked to pretend to be him when running on the treadmill. I always wanted to go higher on the treadmill, but my aunt only let me go to 3 at highest. So, when I got the chance, I got into the room while people weren't looking, and locked the door. I noticed the treadmill was unplugged, spent around 3 minuets maybe (just a guess, I know it took some time) plugging it back in, and felt so proud when it worked. I then set it to ten MPH. Me with my pathetic and useless legs couldn't keep up, and I convinced myself to manually stop my legs because I couldn't reach the string that stopped the treadmill automatically. I stopped, my back was stabbed with a corner of a table, and I fell face first onto the treadmill, and passed out for a few moments. I woke up dizzy, thinking I was dead, and I open the door, and everyone looks horrified, my face, while still there and recognizable, was full of blood and you could see that the machine flayed at least the top layer of skin from parts of my face, specifically the chin and the little area between the nose and upper lip. And they didn't take me to a doctor to my memory, they just put alcohol on it, and literately put a bandage on it. to this day, the only way you can tell this happened to me is that there is a bit of miscoloring around my chin, but I'm surprised it fully healed with at worst, minimal scarring. yet, the thing that gave me a scar was me accidently scratching my arm against a door at 15, and the wound was so shallow that wiping away the blood stopped the bleeding. the door gave me a scar, but my face being almost mangled didn't. Technically, there is a scar, but it's barely visible in normal light.