Girl keeps calling me sir, what does it mean?

Anonymous
Question pretty much says it all but, I have this friend of mine who I've been sorta flirting with a bit lately. One thing I find strange is that she always calls me sir, and only me. Why would she do that? Girls, have you ever done that with a guy and if so what did it mean?

Btw, she obviously isn't doing this in a serious way like talking to her boss or something, more of a friendly/joking way.
Girl keeps calling me sir, what does it mean?
12 Opinion