Nickelodeon Kids' Choice Awards. Hmmm. Green Day won Favorite Music Group and Favorite Song ("Wake Me Up When September Ends"). Jesse McCartney nabbed Favorite Male Singer. Kelly Clarkson ... Female Singer. And Lindsay Lohan (Favorite Actress) apparently mooned the audience. Pink later sang "Stupid Girls," but L.Lo didn't stick around to watch. See Linday's wardrobe malfunction after the jump, pervs.