Two posts below tells the tale of my last encounter with a middle England blue-rinser.
The below clip, drawn to my attention by an American buddy (who's just discovered the delights of Ms Tate) actually does a great job in identifying this phenomena. He told me that there is a very clearly identifiable American equivalent. I was sorry to hear that. Seems escaping from religious persecution, a revolution, a civil war and a re-write of democracy still can't compete with human nature!