After Joan Rivers Walks Out On CNN, David Letterman Walks Out on Joan Rivers

On David Letterman’s show, airing tonight on CBS, Joan Rivers was in the middle of explaining why she walked out on her interview with CNN’s Fredricka Whitfield over the weekend, when Letterman walked out on her. Rivers said Whitfield was being “nasty and opinionated” in her line of questioning. Dave was all ears, until he wasn’t…