Methods of Address
Dear Miss Manners:
What does one do when asked to use first names by someone one would rather not be on familiar terms with?
For example, let's say I have a good friend whose parents I do not like. Over the normal course of interacting with my friend, I occasionally encounter her parents, and address them as Mr. and Mrs. Heterodyne. What am I to do when they ask me to call them Bill and Lucrezia? Given that they've been addressing me by my first name all along, I don't even have the recourse of not offering it in return. Of course I'm aware that one should address people as they wish to be addressed, but calling someone I don't like by their first name seems needlessly hypocritical (as opposed to the occasional mild degree of hypocrisy that is necessary in polite society).
Sincerely,
A Faithful Reader
Seriously, does anyone know? It's a hypothetical question at the moment, but I'm curious and my search fu has failed to dig up the answer.