Discription of Events: I was driving on Watchung Ave. Came to an intersection where the light was red, and a single lane continues straight, but has a turn lane at the light as well. Its a large single lane, enough for 2 cars to fit before we get to the turn lane. Anyway, 2 cars were stopped at the turn lane. I guess they had a little accident. Traffic movement was very slow and a car pulls up to the right of me, he should have stayed behind me, and I was slightly to the left. At this point the light was just turning green, and I had to move to the right. I saw his car staying back and thought he was yielding to me so I could merge in. Seems like our cars touched each other, but I didnt hear or feel anything as we were literally going about 1 mile per hour. The guy then starts following me and trying to cut me off, which he eventually does. He then gets out of his car and is yelling at me for touching his car Im assuming, but did not ask for my insurance or anything. He was just threatening me and began slamming on my driver side window and challenging me to a fight. He was rather tightly wound. I was yelling back, but not nearly as aggressive as he was. Honestly, if we did hit each other, Im not sure who was in the fault, but it was so minimal that to trigger such a reaction was a bit crazy.