Letterman On Palin Jokes Flap

I haven't mentioned this story yet, but if you haven't been following it elsewhere, Letterman explains everything in this clip. Basically, the other night he joked that while Sarah Palin was in town earlier in the week to attend a Yankees game with Rudy Giuliani, Alex Rodriguez "knocked up" her daughter. Letterman didn't realize that Palin was in town with her 14 year-old, not 18 year-old Bristol.. Palin, understandably, went through the roof.