Ben Affleck has offered a rebuttal to friend Matt Damon's saucy video skit with comedienne Sarah Silverman - with an outrageous tune called I'M F**KING BEN AFFLECK. The Pearl Harbor star, who is a childhood friend of Damon's, helped TV host Jimmy Kimmel, Silverman's boyfriend, get his own back by performing the racy reply, which depicts the loved-up pair in various states of undress, painting each other's toenails and wearing matching cut-off jeans. At one point, the tune's refrain is sung by a We Are The World-style choir of celebrities, including Cameron Diaz, Robin Williams, Don Cheadle, Dominic Monaghan, Lance Bass, Joan Jett, Christina Applegate, Meatloaf and Huey Lewis, among others. The hilarious footage is topped off with a kiss blown by Harrison Ford, who drives off in a convertible with a bumper sticker that reads, "Honk if you're f**king Ben Affleck." Silverman and Damon teamed up last month (31Jan08) to film the sketch I'm F**king Matt Damon for Kimmel's 40th birthday and the fifth anniversary of his late-night show Jimmy Kimmel Live.