Even though it has been nearly four years since Mel Gibson's notorious anti-semitic tirade, he still isn't ready to talk about it just yet. While promoting his latest film 'Edge of Darkness,' Dean Richards, an entertainment reporter for Chicago's WGN-TV interviewed the actor but the exchange turned sour when Richards asked the following: "Do you think the public will perceive you any differently after all that's been in the news about you?"

Gibson responds defensively, "That's almost four years ago, dude ... I've done all the necessary mea culpas. Let's move on." Of course, the interview quickly wraps up -- but not before Gibson mutters, "bye bye, a**hole" under his breath. Watch: