To answer before giving the scenario, I think was in the right, but still an arse.
So, I drive into a council car park, behind lots of cars. In looking for spaces I have the choice of turning left or right, or going straight on. The cars in front of mr all turn right, towards the biggest aggregation of spaces (though all look full). As I come up to the turn, I see a car straight ahead preparing to leave, a mom getting her baby out of its buggy. I stop to wait and go into their. space.
I have stopped before the left and right turns. There is enough space that the cars behind me can (and do) drive past me and turn right. After I have stopped, a car comes from the left (ie they had probably turned left after entering the car park to look for a space and not found anything, so turned around and come back down), drives across in front of me and turns left, ie into my 'straight ahead' area, turns around and lines up behind the car that's about to leave.
The car leaves. I drive forward into the space. So does the other car. We're not head on, instead maybe at 30 degrees, so by winding down our windows we can talk. She says that as she had been in the car park looking for a space for longer than me, this is her space, plus I had been blocking traffic waiting. I maintained that I had seen this space significantly before her and that I had been waiting for it in a reasonable location. She said she was prepared to wait all day for the space. I said me too and then after 2 minutes it transpired that she wasn't all that prepared after all and I got the space.
So. Basically, I think I had a 'right' to the space, but that I was an arse to insist on it. I mean, really, who argues over a parking space?! Why have I written all this? To remind me that actually, being chilled is reward enough, no need to try to claim parking spaces too. Far out!
Edit: and I was wearing crocs.