I don't know if Ozark dialect is considered Southern or not for the purpose of this discussion, but since I'm the one doing the considering, I say it is, at least for the duration of this post. I just wanted to recommend a book by Mitch Jayne, titled Home Grown Stories & Home Fried Lies. It's chock full of downhome expressions!
Haha! I love the Ozarks accent, because my paternal grandparents had it, and I live in the Ozarks. Mitch Jayne writes a column for our local paper, the Current Wave, every week...of course, Swamp East Missouri accent is more like Tennessee; there's an interesting hillbilly words, "y'uns" (from "you ones") or "y'ins" that I've heard nowhere else in the US. Usage is "Y'ins meet us f'breakfast after mass" -- though there aren't many Catholics around here...;-D
Mitch Jayne writes wonderful stories, so does the Current Wave editor, Roger Dillon, in his column...I think Roger started the Eb and Flo stories, though I could be mistaken...