Man Vs. Youtube

This video was a You Tube sensation: A guy on a subway train grabs a fire extinguisher off a wall and uses it to fly back and forth while on the train. But how'd he do it? In Man vs. You Tube, engineer Tim Shaw and stuntman extraordinaire Johnny Riche join forces to determine the secrets behind some of the wildest clips to hit the Internet. Are they hoaxes or are they real?