In November, Gingrich called the ad “the dumbest single thing I've done in recent years.” Pelosi blasted that claim earlier this week.

"I think he's done plenty of dumb things, and there's stiff competition for what is the dumbest thing he's done,” she told CNN. “It’s typical, vintage Gingrich to say 'it’s about her, it’s not about me.' "

Pelosi again denied that she has secret information on Gingrich from her time spent serving with him in Congress. Pelosi has made several cryptic remarks indicating that Gingrich’s past will prevent him from becoming president, leading to persistent rumors that she has dirt on him gathered during the course of an ethics investigation in the late '90s.

But she told MSNBC, “Everything [I have] said about Newt Gingrich's ethics is in the public record.”