My t and I call each other by our first names. It DOES irritate me when doctor's offices, other professional places call you by your first name. I was in an At AND t STORE AND THIS kid kept calling me by my first name. I told him that I missed the days of professionalism when you were called Ms. He got the point and called me Ms......It is my understanding that if someone calls you by your first name, then you get to call THEM by their first name. manners.