From Tom Cruise to Heidi Klum, see which celebrities have been covered in green goo at the annual Nickelodeon awards show
Two years before he was asked to host the show, the When in Rome actor was showered in slime after being named the "Arm Fart Champion" by viewers. "That's right!" Duhamel shouted inside L.A.'s Galen Center on Apr. 2, 2011. "We arm fart, yeah!"