You don't want to mess with me

Maybe there's a lesson in this story from a coworker, or maybe it's just another example of unhappy metro riders.  Anyway, here's a recent metro commuting story:

I was waiting on the platform waiting for the train this morning. The train stopped with the doors right in front of me. I started to move to the side to let everyone out. All of a sudden I heard a stern voice say something behind me. I took out one of my ear buds and (in a non-jerk voice) said, “I’m sorry?” It was a 40-50 year old black guy wearing a suit, sunglasses, and a porkpie hat. Who wears a porkpie hat?!

Guy: You can’t just step on my foot like that!
Me (still staying calm): I’m sorry. Just calm down.
We started boarding the train.
Guy: What did you say to me?
Me: I said sorry…
Guy: Ok…
Me: …and calm down.

Guy (getting close to me): Do you know who I am?
I can’t believe he just said that.
Me: I don’t care who you are. I’m just trying to get to work.
Guy: You don’t want to mess with me.
Me: I’m not. You need to grow up.

By this time I think he realized I wasn’t intimidated and he gave up.

Did anyone else google porkpie hat?