In a bizarre incident, former Delaware GOP Senate candidate Christine O'Donnell today walked out of the taping of an interview for CNN's Piers Morgan Tonight, which is set to air tonight. The tipping point was Morgan's question about her stance on gay marriage. (By that point, he had already quizzed her on witchcraft and sex with the tension between the two visibly escalating, especially when Morgan repeatedly asked O'Donnell to address old comments about masturbation she had made in an 1990s MTV documentary special.) "You're being a little rude," she told him several times before asking her handlers "Are we done?" and taking off her microphone. But not before schooling Morgan on conducting interviews: "Don’t you think as a host if I say 'This what I wanna talk about', that’s what we should address?" O'Donnell was on the show promoting her book Troublemaker. “My first ever walk-out in 25 years of interviews,” Morgan wrote on Twitter. “I guess viewers can decide if I was 'rude' or not tonight.” Here is the video, judge for yourselves. UPDATE: After airing the unfinished interview on his show tonight, Morgan invited O'Donnell to return tomorrow and promised not to be rude.