So what were they competing for?Who could get the a hernia the quickest?
Most likely doing it for the same reasons men do silly things these days. To break up the day to day monotony, respect of their peers, hopefully a cold beer for the best routine. Seriously dangerous stuff for those without experience. Those wheels must weigh a ton. My back hurts just looking at them.
Yikes! You could loose a finger or two with that kind of contest!