LARRY King likes to get a little Wild West in the sack, according to his much-younger wife, Shawn Southwick. In an unsettling interview with Howard Stern, Southwick claims, "Larry has this Indian costume that just drives me wild . . . I wear chaps!" She adds that 72-year-old King's bedroom battle cries didn't ring out until after they were married in 1997. Southwick, a devout Mormon, made the wrinkled broadcaster wait until their wedding night to have sex - and only after a doctor signed off on it because of King's heart problems.