Our nanny introduced her 7 year old son to my wife and I and she used our first names to do it. So he when we met him again yesterday for trick or treating, he was told to say "Hi XYZ", using my first name, and he did. I, and many of my friends, grew up where we would address adults by their last name as Mr. or Mrs. and if they were family members or close friends as uncle and aunt. Using first names unless the person offered it to us, always seemed to be very rude. What about you? what are your thought on it? I'm surprised, but it really bugged the hell out of me. I'm not one of his little buddies.