I think that Michelle's reference to liberals valuing fairness, and conservatives valuing purity and obedience, is a reference to the work of the U. Virginia psychologist Jonathan Haidt, on "the moral mind." Perhaps this association is in the background of her recent review of Lisa Baron's book on her life as a conservative press tart. It's hard to imagine any act more antithetical to one's sense of purity as a value than giving a blowjob to Ari Fleischer. It's one of those stories that is in the category of so weird that you can't make this stuff up.
Here's a link to a clip of Haidt talking about this stuff: