i will admit, it annoys me as well!
I'm from baltimore, and i have met people who claim they are from Baltimore then know nothing about it. and have never been there! How the hells bells you from a place you never been!?!?!? I have relatives who have never stepped in Baltimore, but claim they are from there. its like, "NO! Just because our grandparents are from there do not make you a baltimoron my default! and no, sorry, but towson, catonsville, cockeysville, westminster, owings mills, ect. does not count. if you have no idea what a chicken box and half and half is, you are not from baltimore!"