My favorite mountain preposition of all time was my grandmother telling us to "come on out from back down up in under there".

Steepr'n a cow's face.

Bins. This took me a while, my wife's family said it and didn't remember saying it a second later so you could ask them about it. B
But from use it seems to be "being as". Bins you're going there I'll go with you.

   Ruirnt. That corn's ruirnt.

   It may not be southern, but my wife loves things going to hell in a handbasket. It's not simply that things are going to hell, but somewhat daintily, in a handbasket.

Kindly, for kind of. I kindly thought so.

Twicet. Once or twicet. Sometimes onest or twicest.