David Letterman’s crude sexual joke about Sarah Palin’s daughter has really cut it with me. I’m done with him. And CBS appears to be giving him a pass.

There was a time when all politicians were fair game to comedians, but the election’s seven months in the past and clowns like Letterman still can’t figure out what to talk about except Republican politicians. That’s because his ilk doesn’t actually have a sense of humor. All they’ve got is ill will and sarcasm. It shows you what’s in Letterman’s heart.

I wouldn’t be so ticked with him if I thought the comment had been off the cuff. But when you stop to think that some writer came up with that line and Letterman decided to use it. Then he offers the lame excuse that he was making the joke about the 18-year-old daughter, not the 14-year-old. Like that makes a difference. 

Well, he’s under the bus, as far as I’m concerned. It still doesn’t make me any more likely, however, to watch Conan, who’s got his own issues.

Related: lalate.com, abcnews.com