I had just moved into the left lane and was preparing to enter the
left-turn lane so that I could turn left onto a cross-street.  I was
slowing to a stop behind the first car in the line when a driver in the
left-through lane drifted in front of me and forced me to slam on the
brakes.

While the signal was still red, the MFFY started drifting forward and
towards the car in the front of the line.  Still not using a turn
signal, the MFFY accelerated very slowly on the green signal, leaving
about three car-lengths in front of it.  The MFFY went into the left
lane and I passed on the right.  The MFFY then started to match my speed
and play Duckling.

In the right lane ahead was a disabled car, which was stopped and
blocking the lane.  Ordinarily, I would've stopped and waited for all of
the traffic in the left lane to pass me before I pulled out to pass.
But the MFFY Duckling was still behind me, matching my slowing speed,
and there was no traffic behind the Duckling.  I decided to try some
MFFYing.

I flicked on my left-turn signal and started to move in front of the
Duckling, and I did it very slowly.  The Duckling quickly honked at me,
then slammed on the brakes and "let me in".  Is this really how they
expect people to drive?