Yesterday I was returning some CD's to the local library. By an accident of timing I happened to drive in just as a woman sauntered down the carpark. The carpark is fairly small and there's not quite enough room for the roadway to be two way; as a consequence arrows are marked quite clearly.
The woman was, of course, sauntering down the middle! Not enough room on either side to safely pass her and she didn't give a damn about anyone else on the planet but herself! When she got to her car she condescended to clear the roadway and I could find my own spot!
A little observation and some timing and I was positioned to saunter, carelessly, down the middle of the roadway as she was trying to drive out!
Petty? Of course! Satisfying? You betcha!!!