When I was 18 I rode my bike to and from work quite often. I would often carry either my uniform or a spare set of clothes in a plastic gocery bag, that was easy to hold with one hand with I would have on the handle bar.
One day after work I was in a big hurry, so after I got off work I took off on my bike fast, pulled out onto the highway, and turned left, which is downhill, so I was going fast.
The bag of clothes got caught in the front tire. The back end of my bike flipped up in the air, and the front end went down, and slid 10 feet, with my face flat on the pavement sliding along with it.
After it stopped I stood up and looked around, knowing my face just took a beating. I walked into dairy queen, and when I walked in there was a table with 20 people sitting at it. They all gasped and looked at me in shock. I went straight in the bathroom to see that I left half of my face laying on the pavement. My eyebrow was split open, and a flap of skin was folded over like a triangle.
I called my grandfather who came over and brought me to the hospital. They cleaned me up and stitched me up. I basically had extremely bad rub burn.
For the next month I looked extremely gross. It was terrible. For the first week I could barely talk, because my cheek was one big scab. The Doctor said I might have a temperoary tatoo scarring effect.
For the next year I had two big blueish black scars on the left side of my face. For a few months in the middle of that, they had white bumbs all over them, and on a few ocasions a bump would turn into a pimple, from which a tiny piece of gravel would emerge.
Over the next few years the scars gradually got lighter and lighter, and now they are barely noticeable.
I wont lie. This had a very bad effect on me for a long time. I was extremely insecure about them, and I even went through a phase where I carried make up around with me to try and cover them up. I hated my scars, and was literally traumatized by the event. I'm very luckly to look the way I do today. However in the bottom picture you can see what remains from what used to be one of the big dark blueish black spots, and you can see the scar on my eyebrow, from where I had a big triangle of no skin. You can also see a spot on my chin where hair does not grow. I had to have that stitched up too.