So have you ever had someone mistake the way you talk for some kind of accent?
I do all the time. Everyday at work I get questions asking me if I'm British or Australian because 'I have an accent'. In actuality I have a speech impediment and most people are just too stupid to realize this. If I tell them I have a speech impediment they talk slower and act like I'm mentally retarded. If I tell them I'm not British/Australian/Brooklyn-ish they seem to want to disbelieve and argue that I don't know what I am. So I've developed the habit of just telling people I'm really British cause it's easier.
So anyone mistake your speech for something it definitely isn't?