Parkour. Don't Let This Fall Into The Hands of Kids In The Ghetto. The Cops Will Never Catch Them - WWWWP

This is what happens when young, gymnastically-inclined Euro urbanites get bored. They run out into the street and begin a regimen of flipping from building to building.

To say that I am not reverent of their athletic prowess to a certain extent would be a lie, but this does nothing to negate the fact that those who engage in this "sport" are still obviously and utterly BATSHIT.