We live on a terrace, almost opposite a side turning which has gable ends of 2 other terraces on either side. There is usually enough space, along our road and the side road, for most of the local cars to park in the evening and at weekends - during the day 6th-form students from round the corner take a lot of the space and that can be irritating when you come home in the rain with a bootful of shopping but otherwise we all get by. And both are ordinary roads - nobody owns a space.
One of the gable ends has its front door on the side and there is an unmarked parking bay there with space for 3 cars; the resident of this house tends to look on all 3 spaces as hers. DD1 has been away for 2 months and her car has been left in various spots during her absence after I've have taken it out for exercise; for the first 2-3 weeks it was in one of these 3 spaces, and this woman was definitely not happy about this because she wasn't informed. (Or asked for permission, possibly )
On the other side there is no bay, just the full length of house+back yard, with space for 5-6 cars. The resident of that house normally parks her car in "her" space, beside the very the end of her back yard wall. DD1 came back today, took her car out and then innocently left it parked in that space.
The rest of the length of kerb alongside the house was empty - but when this woman returned she left the car with its engine running and came over to ask me to move the car so that she could park in "her" space. I wasn't quick-thinking enough to say I hadn't got a key, or ballsy enough to say "why not just park behind it?" (this is a fit young woman, not someone old or with any physical problems) so I very grudgingly moved it.
Thing is both these women have a thing about "their" spaces and often stand around outside discussing them so I know side-front-door woman (who is a nosy old bat) has told back-yard-parker whose car it was - she wouldn't have known otherwise.
It would be very childish of me to start parking in "her" space occasionally, wouldn't it...?