The World Naked Bike Ride wants to make a point that there are many things more offensive than a bare bum. The indecent exposure is not to some guy's twig n' berries, but to our polluted environment. On Saturday, Toronto was among 70 cities around the world that took a spin au naturel as a celebration of cycling, a protest against car culture, a comment on pollution, or just to express some exhibitionist tendencies.......