Smug, hip David Letterman offered a smirky non-apology about his ongoing class and sexist slurs against the Palins, his apparent social inferiors. "We were, as we often do, making jokes about people in the news and we made some jokes about Sarah Palin and her daughter, the 18-year-old girl, who is — her name is Bristol, that's right, and so, then, now they're upset with me . . .""These are not jokes made about her 14-year-old daughter. I would never, never make jokes about raping or having sex of any description with a 14-year-old girl. I mean, look at...