I was driving to work, two lane highway due to construction. Semi truck in the right lane going about the speed limit. SUV behind the semi. I had just passed a few cars, and I was about to start passing both these when I spotted someone flying up in my rear view.
I had some time before I got to the semi, so I just popped back into the right lane to let him pass. The SUV started passing the semi around the same time. They're passing at a reasonable speed and they're nearly done passing when Speedy McSpeedster comes up on them, pulling the "I'm going to come up on you at 90mph, make you think I'm about to rear end you before slowing down 4ft away from your bumper" maneuver and begins aggressively tailgating the them.
The SUV...stops passing the semi.
It goes about how you imagine. Speedy McSpeedster starts flashing his headlights, gesticulating, and even rolls down his window to give the SUV the finger.
Eventually, the highway gets a 3rd lane back and he whips around the SUV and peels off like a bat out of hell.
Wish I'd had popcorn.