The drivers that seem to think their car is the size of a tank and hesitate and wait whilst passing an obstacle on their side of the road when there's a gap that you could "drive a tank" through and they're driving a Honda Jazz or Hyundai i10.
In bold, I encounter this on a regular basis, particularly on country lanes. The arrogance, stupidity, lack of anticipation and ignorance infuriates me, to the point where I'm going have to put an angry face emoji at the end of this post.