The man stood on a big chunk of ice, put the rope around his neck and patiently waited until the ice melted. Btw I did not read this anywhere else, but the same scenario was in the movie Saw. The Jigsaw serial killer put a man on a chunk of ice and put a rope around his head. The chunk of ice was also on one end of a scale thingy, on the other end was a guy bound to a metal chair with electrical contacts underneath it. If the first guy slipped of the ice the second guy would get electrocuted since the scale would get lowered onto the electrical contacts. Very original setup indeed.