In a contentious interview on "Today," she demanded that the CBS late-night star apologize to women, while also suggesting that he lied about whether the jokes were about her older or younger daughter.
Meanwhile, on CNN, she warmed to the theme in a late-morning interview with Wolf Blitzer, saying Letterman's jokes were "You know, pretty perverted." Letterman has since disavowed them, and told viewers of "Late Show" Wednesday, "Am I guilty of poor taste? Yes. Did I suggest that it was OK for her 14-year-old daughter to be having promiscuous sex? No."
When "Today's" Matt Lauer said to Palin that Letterman had insisted the jokes were about her adult daughter, Bristol, a clearly agitated Palin said, "Matt, I would say you and anyone else are extremely naive to believe that convenient excuse of Dave's. Took him a couple days to think of that excuse. No, he wasn't talking about my 14-year-old daughter who was at the game with me? He was talking about some other daughter?"
In the interview - in which Palin also said she doesn't believe she should be automatically considered the front-runner for the Republican presidential nomination in 2012 - Lauer asked whether Letterman owed her daughter an apology:
"I would like to see him apologize to young women across the country for contributing to kind of that thread that is throughout our culture that makes it sound like it is OK to talk about young girls in that way, where it's kind of OK, accepted and funny to talk about statutory rape," she said. "It's not cool. It's not funny."
Both CBS and a spokesman for Letterman declined to comment on Palin's remarks, referring reporters back to his on-air comments Wednesday.