Trevor Noah talks with Stephen Colbert, mocks Republican debate: 'It was painful'

When Trevor Noah sat down with "Late Show" host Stephen Colbert on Thursday night, they quickly realized they had one very important thing in common."Stepping into the seat of a legend of talk shows, that's crazy!" Colbert said of Noah, who takes over for Jon Stewart on "The Daily Show" on Sept. 28. "Who on earth would ever want to do that?!"