Today, I invented the sport of bungee-skateboarding.
To participate you need:
a) A skateboard
b) A length of rubber. The arm of gimp-suit will do. Failing that, an old bicycle inner-tube
c) Beer. And vodka.
There are several disciplines to this sport.
The first is attaching the skateboard to your body with the length of rubber. Subsequent stunts should make user of the elastic properties of the rubber.
The second involves attaching the board to a motor-vehicle with the length of rubber. The participant then attempts to remain upright on the board.
The third is a simple endurance event called "Waiting for the ambulance"