You may think you speak "Standard English straight out of the dictionary" but when you step away from the Great Lakes you get asked annoying questions like "Are you from Wisconsin?" or "Are you from Chicago?" Chances are you call carbonated drinks "pop."
That sounds sort of like me, but when I took the quiz, I got this:
"North Central" is what professional linguists call the Minnesota accent. If you saw "Fargo" you probably didn't think the characters sounded very out of the ordinary. Outsiders probably mistake you for a Canadian a lot.