at 11, I was riding the Stingray through the desert in Tucson, along with my friends. I was tearing it up and well in front of them, turned to look back at them and trash talked them for being slow. Turned around just has I made contact with the top strand of a barb wire fence, flew backwards a good distance, no idea how fast I was going, just pumping all out, going downhill, woke up getting stitches across my face, the tetanus shot was the worst part.
My friends were good kids, one stayed with me, while the other went and got my Dad, then they brought my bike home for me, I didn't get to ride for about a week after that one.