Arrrr!!!! Drives me absolutely mad when driver turns the other direction briefly before turning left or right. I can understand if they are driving a lorry or bus to make sure the get a good turning radius, or before making an U-turn on a tight space.....but no.....they did that before making a 90deg or less turn. I had a couple of near misses due to this and saw many whilst behind them. Some are worst than the other, almost taking half a lane on their left/right and all of them did not even looked at their rear/side mirror to check for car behind them before making that move I really don't know where they learn that from......
Anyway, rant over