It’s the controversy that just keeps giving. David Letterman again apologized to Alaska Governor Sarah Palin on his show Monday night, reiterating that his earlier pregnancy joke was not directed at Palin’s younger daughter. "I had, honestly, no idea that the 14-year-old girl, I had no idea that anybody was at the ball game except the governor,” Letterman said. "It’s not your fault that it was misunderstood, it’s my fault. So I would like to apologize, especially to the two daughters involved, Bristol and Willow, and also to the governor and her family and everybody else who was outraged by the joke." Letterman joked last week that Palin’s daughter was impregnated by Alex Rodriguez on a trip to Yankee stadium. Letterman said he was talking about Palin’s older daughter, but Palin said he was clearly referring to 14-year-old Willow, who was there with her at the stadium. A CBS advertiser reportedly pulled out after the controversy.