Nancy Pelosi has some serious dirt on Newt Gingrich—or at least she's acting like it. When questioned about the possibility of a President Gingrich on Tuesday night, Pelosi told CNN it wouldn't happen. "There's something I know," she said. But Gingrich is denying Pelosi knows anything, insisting that "she lives in a San Francisco environment of very strange fantasies and very strange understandings of reality," on NBC's Today show Wednesday. "If she knows something, I have a simple challenge: spit it out." Pelosi has made a similar claim before, pointing out back in December that she "served on the investigative committee that investigated him, four of us locked in a room in an undisclosed location for a year. A thousand pages of his stuff."