Here in New Zealand, when Letterman airs, it a couple of days old, so I'm at this moment watching the one after the one in the youtube clip.
He is stll steaming over being jerked around by McCain.
He said that he was angry that McCain said on the phone that he was leaving to DC to save the economy, but he didn't leave to the next morning. The
episode's humor was largely based on this shocker.
Jokingly, he said that he felt cheap and used etc.
When he was speaking to McCain on the phone, John said that he had to go for america and Dave said go, do what you gatta do. But the fact that he
didn't actually leave and he didn't even get his running mate to stand in (the very purpose of the running mate).
This electoral rat race is a joke.