Hmm, I clearly don't have this aspect of BPD. (I split entities, organisations, ways of life, choices. etc.)
Mostly I see rules as "guidelines", and I'm only interested in the ones I make myself, but there are some I do tend to live by - if a person is my friend I will treat them with decency in any way which would make a large impact on our friendship if I didn't, but I expect the same back. Pisstaking etc is squabbling, while deliberate attempts to screw with a person or their life - either in reality, or in ways which could easily be translated into reality from the setting they're in, cross the line between squabbling and conflict.
Squabbling will make me irritated though it won't actually harm me unless it takes up so much of my time its taking away from my quality of life, but cross the line and I'm not very nice because I ask a certain amount of decency from people who would call themselves my friends, and if they're willing to try to use aspects of our "friendship" against me, they are not my friend. But basically the first place I apply any sort of code or understanding of how people need to treat each other to get on is to how people treat me, and I don't make compromises there.
Treat me with respect and I will respect you, treat me like an idiot and I'm not interested. You could say part of it is my error for misleading people in thinking they can treat me that way through my own retreat into lala land, my message to the person in question would be sorry but I needed a break from life and I'm sure they'll understand that better than any. The situation cannot be sorted from my end because I'm not the one who did it. Its not about them, its about their actions, and possibly their stinkingly insulting opinion of my intelligence level.