First off, Not even the foggiest clue what the guy on the motorcycle said, but he definitely pissed someone off. But mad props for staying on the bike after getting sent nearly into the median by the other driver. He might want to teach a defensive driving course, but might want to take an anger management one for himself. The car driver is lucky the motorcycle didn't want revenge. But sometimes its wise, even when you are seeing red because of some driver, to stay in the car, it can definitely be safer sometimes.