While Paris Hilton waits to see if she’s going to spend time behind bars for her recent arrest with a stash of cocaine, her frenemy and ex-high school pal Kim Kardashian (30) went on Jay Leno’s show to confirm how squeaky clean she is. “I’ve never gotten into drugs,” she told Leno on Tuesday night’s show. She said her dad branded her the “responsible one” and even taught her to drive when she was 14, so she could be the designated driver for her sister and friends in case they’d had a few too many drinks. PHOTO CREDIT: EONLINE