On my way home from work last night, this was shouted to me by the driver of a car. So, a quick quiz. Guess what I had done immediately beforehand, was it: Sailed straight through a red light, narrowly missing a HGV. Bunny hopped off the pavement into a 60MPH traffic stream, giving the finger to anyone who sounded their horn. Executed a textbook right turn. Did a shoulder check, road completely clear. Due to oncoming traffic overtaking parked cars, stopped somewhat to the left of the centre line. Waited for a gap in the oncoming traffic, when a gap appeared turned right. No prizes for guessing (c). The strange thing is, the car driver was one of three that had stopped behind me with no fuss at all and had then patiently waited for me to turn. Perhaps he makes a habit of driving into the back of vehicles that are legitimately stopped on the carriageway. This was a semi-rural A road, 40MPH limit with decent sight lines (slight left curve where I was stopped, but there was a good couple of hundred yards visibility). I wish I could say that I asked exactly what was dangerous about the maneuver, but there wasn't time. I had to settle for "What? I was turning right, knobhead.". I doubt he heard me though.