The New York Times has an interesting interactive quiz all about dialects. By answering 25 short questions they place you on a map of the US in terms of how you pronounce words and which words you use. For instance, do you pronounce ‘aunt‘ like ‘ant‘ or “caught‘? Here’s another example.
I actually call it a submarine sandwich. So here’s how my dialect and accent fits: seems I’m not a Southerner, unless it’s Florida (I have to think all those Canadian Snowbirds living there have influenced the language).