Jimmy Kimmel has finally responded to girlfriend Sarah Silverman's hilarious music video confession, a month ago, that she is, in fact, f*cking Matt Damon. On Sunday night after the Oscars, the late-night host let Silverman know just who he's been canoodling with. Much like Silverman's video song, which featured Damon bragging about their trysts, Kimmel's song debut shows the barechested host alongside a latex-shirted Ben Affleck, who do each other's hair, paint each other's toes -- and of course, brag about their sexual relations together.