David Letterman clarified – but didn't apologize for – a joke about Sarah Palin's daughter on his show. "One awkward moment for Sarah Palin at the Yankee game," Letterman said earlier this week. "During the seventh inning, her daughter was knocked up by Alex Rodriguez." Palin said the "disgusting" joke was a reference to her daughter, Willow, 14. Letterman shot back that the joke was on Bristol, 18. "These are not jokes made about her 14-year-old daughter. I would never make jokes about having sex of any description with a 14-year-old girl…. Am I guilty of bad taste? Yes." (Photo: WENN)

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