[Nitzanim, Israel; April 1. Image via Getty]

Israeli youth cover themselves with mud during a festival at Nitzanim beach in southern Israel on April 1, 2010. The three-day festival, which is held during the Jewish holiday of Passover, attracts many young Israelis and includes rock concerts, meditation, yoga sessions and nudist camps. AFP PHOTO/DAVID BUIMOVITCH (Photo credit should read DAVID BUIMOVITCH/AFP/Getty Images)