Stair surfin

The act of decending a carpeted staircase on your stomach with the aid of a charity bag & or too much alcahol, The bag is to be worn as a poncho with a hole for your head , you then adopt a position simalar to that of a free fall parachutist whilst lying face down at the top of the stairs, gently move yourself forward until stupidity or gravity takes over, steer with your out streched legs & regulate speed with your toes.