David Letterman won’t shut up about John McCain’s Late Show cancellation earlier this week. The late night host spent the second night in a row venting about the perceived snub with reality personality/professional party girl Paris Hilton.

Paris was on the show to promote her MTV reality series, Paris Hilton’s My New BFF, premiering September 30.

Letterman compared McCain’s cancellation to David Blaine’s failed Dive of Death stint.

“They just left the guy hanging there,” he joked. “It’s the same thing McCain did to me last night.”

“I heard he dissed you,” Hilton told Letterman. “He dissed me.”