I fell out of the tree house about 20 feet, I didn't get hurt from the landing but on the way down the back of my thigh got ripped open on a nail when I was about 15. I had to stuff my shirt in the hole in my thigh and walk home which was about 3/4ths of a mile. It ripped a hole about 7 inches long down the back of my thigh down to the muscle just barely missing a muscle as bad as it sounds I got stitched up and was mostly healed in about 2 weeks.