I've worked in a hospital, and have seen really bad injuries from roofers falling off roofs. Some die. One had two shattered feet/legs (which this kid would have had had he landed on two feet). Some live with head injuries for the rest of their lives. This kid landed right on his hip ... is very lucky if he doesn't have a broken hip or pelvis. Warning, do not think this is cool and try it. You will be sorry for the rest of your life, if you survive, that is.