Matt Damon and Jimmy Kimmel have been feuding for years [1], and on Monday, their feud took an unexpected turn when Matt challenged Jimmy on the paternity of his unborn child with wife Molly McNearney [2]. In a hilarious skit, the men take their issues to the Maury show, where they allow a paternity test to reveal who the father of Molly's baby is. While Jimmy claims that he's the dad, Matt remains adamant that it's him. Boy, are they in for a big surprise!