Comes from the south, like around Houston and whatnot. It does sound pretty good when you're high though D: http://www.youtube.com/watch?v=UI6-R05EMuc
If you want answers, I suggest Google -.- I don't see how you can tell if they are from the south or even this country. Most of the words are so "screwed," you can't tell what they are saying. Although, even if it wasn't so messed up, it would still just be a couple of black guys with a drum machine and synths =/