Three masked men masturbate during a Masturbation-marathon on May 31, 2008 in Ishoej, near Copenhagen. The event is inspired by the US where the group Good Vibrations in 1999 organized the first Masturbate-a-thon in San Francisco. In 2006, it was the first European Masturbate-a-thon held in London, and now Copenhagen hosts the event. The proceeds from today's event in Denmark will go to AIDS Foundation and Unification Sex & Society, organizations fighting for sexual well-being and sexual rights. AFP PHOTO / SCANPIX / Jens Noergaard Larsen