They say most Sky Diving accidents happen when jumpers get too confident in their abilities, performing stunts that either injure or kill them. Most Sky Diving deaths occur due to pilot error, not failed equipment.
This harrowing video shows a group of guys messing around once their canopies are open. They get too close to each other and the worst happens.
Although he escaped with his life, the jumper is a quadriplegic and as he put it in his YouTube post, “Stupid hurts”.