Generally speaking I don't associate myself with people whose actions I deem are offensive. Nor am I a guy who gets *triggered* easily. It's pointless and not cost beneficial. But I'll humor 你 for the sake of this question, If there was a Person A who did things that was extremely offensive. I'd either tell them to quite literally fuck off 或者 depending on the situation I'll temper my methods accordingly.
Ehhh I don't rly find anything they do offensive lmao.
I guess a couple 老友记 I have are pretty inconsiderate about the health issues they know I have. But I don't rly care because we're not the closest of 老友记 anyway.
As for siblings.. my brother doesn't offend me lol. Maybe when he wakes up for work at 5am and leaves the light on and is noisy I get slightly agitated but it's fine :L