The problem here is there's no one Southern dialect. It ranges from Hillbilly, to the coastal states, to backwoods, the Southern gentry to white trash, and Texan. Each has their own turn of a phrase.
My wife maintains a bit more of her middle Tennessee accent than I do. Some time ago she asked me why our dog responded better to me than her.
I explained that I trained Heidi, the dog, to sit and when I tell her to sit she does.
Heidi never learned the command "seeyet". :)