Back when the youth used to exercise, but let's just assume he's dead. This type of riding is often referred to as Trials biking, it's widely considered one of the hardest biking disciplines you can engage in. Much on YouTube of both fails as well as incredible feats by professionals. Danny MacAskill is one of my favorites, Check out "Danny MacAskill's Imaginate" on YT if interested in seeing an absolute master with professional production.
