Sorry Washington Post, but your inside-the-beltway paper has never been known for its sense of humor, anyway. Executive Editor Marcus Brauchli said the online series "Mouthpiece Theater," by two WaPo journalists, has been canceled after they joked about "Mad B---h Beer," followed by a picture of Hillary Clinton. Zing! The not-so-clever crack yielded a letter of protest from the group Women Action and the Media, which sent a letter with 32 signatures saying the video was "sexist" and "tasteless." The two journalists were Dana Milbank and Chris Cillizza. "While I highly doubt the secretary of state has seen 'Mouthpiece Theater,' I would be honored to have the opportunity to apologize to her over a beer," Milbank said. This is only the latest embarrassment for the Washington Post, which only last month had a high-profile crisis on its hands when it offered private "salons" with its journalists.