I spiked myself on the inside of my right knee when I was 20 (still have the scar). Was my first full time job as a climber in CT. I had been climbing down in FL for about a year, but was mostly rope climbing. Boss said go put a rope in that cherry so we can pull it over. Then he left to do something on the other side of the house. I hadn't been climbing for a few weeks and was anxious to get in a tree and impress. Lol, I flew up that tree. Spiked my ass good too. I tried to keep pant leg off the blood and let it run down into my boot/sock. I was afraid if the boss man saw it he wouldn't want me to climb anymore. He later said "man, for someone who says they're not real comfortable on spikes, you sure got up that tree fast! There were like 4' in between spike marks".