Discription of Events: Driver cutting in and out of traffic. At stop light I was behind. I guess he saw me shaking me head at his dangerous driving. After the light I got over to get away from his careless driving and he decided he was going to try to toy with me so he purposefully kept cutting me off regardless of the lane I got it. Almost causing an accident at one point. This occurred on Howard St between MLK and North Avenue at 8:40 am on Saturday August 11th, 2018. Past North Avenue he decided he was going to stop next to me at a red light and yell inappropriate jargon at me.