How do people get a sense of entitlement?

I was at the ATM and the bank today, and I overheard an exchange between a "lady" (she was no lady) and a man. Apparently the "lady" was going into the bank, and the man was coming out. The man opened the door and proceded to walk out of the bank. The "lady" then launched into him for not holding the door for her, because she was a "lady", and she cast all sorts of aspersions on the man's manners. She was in no way unable to open and hold the door for herself, except for the fact that she believes the XX chromosome set affords her the luxury of guilting and shaming any man she comes into contact with that does not "do the gentlemanly thing, whatever the fuck that is".

I called her on it and told her she was incredibly rude. I wish my brain had been along for the ride because in retrospect I would have told her that "polite ladies" do not call attention to the shortcomings of others.