What set him off? During Thursday's show, Brzezinski criticized Trump's behavior as president: "Let's say someone came into NBC and took over NBC and started tweeting wildly about people's appearances, bullying people, talking about people in the competition, lying every day, undermining his managers, throwing them under — the person would be thrown out," she said. "It's just not normal behavior. In fact, there would be concern that perhaps the person who runs the company is out of his mind."