Hailed as the world's biggest naked protest, the World Naked Bike Ride is staging events in 70 cities and 20 countries across the globe.

While the biking in the Southern Hemisphere occurred in March, the rides kick off across the Northern Hemisphere on Saturday June 11.  This includes events in London, Los Angeles, New York, Toronto, and Mexico City among many others this weekend.

In a statement on the organizations website, World Naked Bike Ride claims, We face automobile traffic with our naked bodies as the best way of defending our dignity and exposing the unique dangers faced by cyclists and pedestrians as well as the negative consequences we all face due to dependence on oil, and other forms of non-renewable energy.

The freewheeling flesh-fest is used as a means of social protest against car culture, though many enjoy the sheer novelty of pedaling around in the buff.  While all rides around the world are clothing optional, the dress code is 'bare as you dare' and riders are encouraged to challenge yourself.  Helmets are not considered a breach of the code and riders are encouraged to use body paint and bike decorations.

London's ride has traditionally garnered the most attention and boasts the highest participation at over 1,000 nude cyclists.  That's up from just 58 riders in 2004.

Curious?  Check out the FAQ page for the answers to such questions as Won't it hurt my genitals?  What if I'm not conventionally attractive?  or Can I write off contributions to the World Naked Bike Ride on my tax return?

Click Here for a full list of events across the globe.