As a kid, I was being chased up a pile of sticks by bullies. They were all climbing it to get at me and when they were all about halfway up, I jumped off of it. The pile was about 25 feet in the air. I had landed on the ground and ran for my life. Not knowing I had landed on a stick that was protruding out of the ground. Said stick went through my knee-cap and messed it up. If you moved the stick you would move my knee-cap with it. Safe to say that hurt really bad! And it went through my knee about an inch or so.