Trying to prove that he can sing… and sweat. (Courtesy of stuartguthriemusic at Flickr.com)

You know who that is? That's Aaron Carter: the punk-ass younger brother of the Backstreet Boys' Nick Carter. The still-trying-to-make-it pop singer was pulled over for speeding in his Cadillac Escalade in Kimble County yesterday. And, when his car was searched, officers found marijuana in the car, reports People magazine.

Today, Aaron, 20, is sitting in a Junction, Texas jail for marijuana possession, awaiting an appearance before a magistrate.

Maybe Aaron should try out for American Idol next year? Bet on American Idol in the Bodog Sportsbook today!