My mother seems to have an obsession with everyone thinking she is "posh" and I'm starting to find it really bloody annoying. This morning she asked to take my son to McDonald's next week (his naughty favourite!) and I made a joke asking if she was getting me McDonald's too 
her response, "You can eat in the rough McDonald's where you live, I will take DS to the posh McDonald's around my area." There is a posh McDonald's? 😂 She is constantly telling everyone how nice the area she lives in is (and how not nice mine is!), how the people are "just different" where she lives, how they dress better, etc. I've noticed when we go out, she will be very polite to staff if we are eating in a fancy restaurant, but rude and ignorant to staff in a fast food place, for example. This really bothers me. I've tried to ignore it over the years but she seems to be getting worse. Why is she so fixated on people thinking she is some kind of upper class?! The irony is, she was on benefits my whole childhood!