Joey was playing to non thinkers , and jokers
Paul was dealing in reality, and sincerity.
These are the same people who laughed, scoffed, and called Sarah an Idiot. When she too was dealing in reality and sincerity.
It goes towards to human nature of wanting to be on the "Popular" side than being on the "Correct" side.(After all who is more cooler than Barack?) He gives me free Ubama Phones! I don't want to back those squares who want to save Medicare from Bankruptcy or being Governor of the Largest State in the Union.
Now, with that said I do thin Biden came across as a real asshat and many people will pick up on that.