I have a southern Ontario accent... I have no idea what defines it, but I know my cousins out west sound completely whack compared to everyone here, to I bet they think the same of us Ontarians.

I had lunch at a steakhouse in Tennessee once. I ordered skim milk, because I'd never tried it before, and the waitress looked at my parents with these huge eyes and said, "Sheh wahnts skiiem?" I burst out laughing, she was the first person I'd ever heard with a southern accent in real life.