Police in Huntington Beach, Calif., have shown Nick Carter the meaning of being busted. The 25-year-old ex-Backstreet Boy was arrested Saturday night for allegedly driving under the influence after officers spotted him committing a traffic violation. Carter's rep claims Paris' onetime boy toy (click here to see what you're missing, honey) was taking doctor-prescribed medication and "was unaware of its interaction possibilities." Ah, the old "I thought I had two stomachs — one for pills and one for booze" defense.