As you saw on tonight's premiere of "MTV's Ultimate Parkour Challenge," to be a parkour athlete means you're one helluva brave individual -- 'cuz you're gonna be vaulting over things most people have no business even being near. But that's what makes these airborne specimens so badass.
In case you're still a little unclear about some of the moves, we've got more schooling to help you out. Check out the video below, where Pip explains why it's important for all the guys to create their own lines (you'll have to check out the vid to find out what "lines" are). Then, watch a play-by-play of him and his buddy in some wild back-alley action.