I've found over the years that I am completely at home calling men "sir."
"What would you like to drink, sir?"
"Have you decided, sir?"
"Sir, do you think my tip will be more than ten percent or should I just give up now?"
However, I find myself very uncomfortable calling women "ma'am" or "madam" or even "miss." Can't do it.
"And are.... you.... ready?"
Am I putting feminism back ten years every time I do this? Am I the only one? Should I examine my relationship with my parents?