Alaska Gov. Sarah Palin's (R) office kept its simmering feud with late night talk show host David Letterman alive into Thursday morning, taking another shot at Letterman's latest comments last night.

Per ABC's Kate Snow, Palin spokeswoman Meg Stapleton responded to Letterman's clarification of a controversial joke on his slow last night. (He wasn't joking about 14-year-old Willow Palin resisting the advances of Yankee slugger Alex Rodriguez, Letterman said, he was talking about 18-year-old Bristol.)

Snow tweeted the Palin camp's reaction Thursday mornining.

"The Palins have no intention of providing a ratings boost for David Letterman by appearing on his show," Stapleton said. "Plus, it would be wise to keep Willow away from David Letterman." Meg Stapleton."

The statement marks a choice jab at Letterman, who Gov. Palin says was "perverted" in his joke several nights ago.

Cross-posted to the Twitter Room.