On this morning's commute:
I'm in the center turn lane approaching an intersection to make a left. A truck passes me on my right and I notice the driver has his middle finger flying my way and an angry grimace on his face. The driver pulls in front of me (with ample passing room). He stops at the red light. I accelerate up to the intersection and pull up behind the truck. More middle finger, more angry grimace. His window is down and I look at him in the mirror and say loudly:

"What's the deal dude? I'm just trying to make a left turn"

This seems to agitate him even more. More middle finger, more grimace, some mumbling.

I yell "geez, what's the problem, man"

At this, the guy is so agitated, he's pumping his middle finger my way so fast it's nearly a blur. He's rocking back and forth in the truck and his face is so twisted it's getting comical. I start laughing out loud.

Luckily the light turned green or I fear the guy might have exploded. I watched him still pumping his finger and freaking out as he pulled away from me after the left turn.

WEIRDO!