New Jersey Gov. Chris Christie joined David Letterman... for some laughs about the many fat jokes Dave has made about the governor's girth.

During his first appearance on "Late Show with David Letterman", Christie read two of Letterman's jokes that he said were "some of my personal favorites."

The governor also pulled out a doughnut and started eating it while Letterman asked him if he was bothered by the digs that have been made about his weight. Christie said he wasn't: He laughs at the jokes if he finds them funny.