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LOS ANGELES (AP) -- Robert Downey Junior is the best male buttkicker. He earned the distinction at Nickelodeon's 27th annual Kids' Choice Awards Saturday night. Downey says he wasn't always a buttkicker. He says life kicked his "proverbial butt countless times in many ways for many years," until he started kicking back. Jennifer Lawrence wins favorite movie actress and favorite female buttkicker. Host Mark Wahlberg got slimmed at the end of the show, with help from Kevin Hart and Wahlberg's three young kids.