I had no idea I parked in The Twilight Zone

Something kind of weird happened Wednesday.
It was after I'd just left work. I'd stopped in a parking lot near the Taco Bell and Marathon station. I parked in one of the spots furthest from the building, where I didn't think I could possibly annoy anyone. For awhile I just sat there, going over some paperwork, reading a few things, and generally unwinding.

There was a tanker parked next to the gas station. He was filling up their gas supply. I halfheartedly watched in my rear view mirror as the guy did all the junk he had to do. I winced and looked away as he bent over to pick something up, showing me and the rest of the world way more butt crack than we really needed to see.

(Guess it was my own fault for looking in the "rear view" mirror, huh?)

Then he got back in his truck and started taking care of paperwork or something. I went back to what I was doing and ignored him, even after he seemed to be sitting there for an unusually long period of time.

A few minutes later the truck moved slightly and I could see he was getting ready to leave.

He had multiple driveways to choose from on either end of the lot; any of them would have worked just fine, and they all went to the exact same road. But for some reason, this is what he did:
He pulled right up behind ME, almost blocking me into my parking space.
And he sat there.
He pulled up further, nearly touching my bumper.
And he HONKED.

For some reason, he was refusing to leave until I left first.

This made no sense, because like I said, there were other ways he could have gone... and he'd made it MORE difficult for me to leave by pulling right up behind me, almost blocking me in.

I sat there, kind of startled and confused.

He HONKED again, clearly impatient with me.

By now I was feeling intimidated, and was uncomfortable, and was getting kind of upset about it.
I backed out as carefully as I could and pulled away, giving my own horn a beep of frustration. It sounded like a mouse's squeak compared to the lion's roar of his own horn.

I spent the next few minutes in a really bad mood.

Now I'm just wondering what the heck happened.
.