What type of english do you speak?

Just saw this on a professor's blog (he teaches at my alma mater. He teaches Latin, I took Greek, so I never took a course under him, but I like to hear his opinions.)
I'm really not sure where the 5% came from.

Your Linguistic Profile:

65% General American English 25% Dixie 5% Yankee 0% Midwestern 0% Upper Midwestern

What Kind of American English Do You Speak?