Asshole At The Mall

I was walking through the mall earlier today, and I think most people would agree that although there isn't a correct way to walk through the mall, the majority of people would walk parallel to the row of storefronts, like people walk down a riverbank, which is what I was doing. All of a sudden, this guy veers in from the right and cuts closely in front of me and walks right past, so abruptly that our feet collide mildly, but not hard enough for either one of us to trip. I am annoyed that he walked in such a douchey way and am staring at the back of his head, appalled, when he gets to a decent distance and turns around and goes

'At least say sorry!' angrily.

'You cut right in front of me.' I say, and wave my arm past my body in the manner that he cut me off in.

'Fuck you!' he starts saying.

'Fuck you!' I say back, matching each time he says it - for lack of a better insult because I don't want to start being racist - and give him the finger. I can't be bothered anymore and turn away.

'What did you say? What did you say? What did you say?' he keeps saying, and crosses back over and starts following my friend and I. 

'You cut right in front of me, now stop harassing me.' I say, still walking.

'What did you say? What did you say? What did you say?' he says, jiggling his shoulders like he's so bad ass.

'Stop harassing me.' I say repeatedly until he goes away.

I know that it was bad of me to provoke him further, but he started it, and I refuse to let some misogynistic, low-class piece of trash throw a tantrum at me think it's okay. After what I've gone through so recently, some loser in a mall getting mad for something so pedantic isn't all that scary to me. My friend was afraid but even while it was happening I was aware that we were in the middle of a shopping mall and if he did want to break his gangsta out we could just run to a store with security guards.