1. In the back 40
    As in back 40 acres, waaaay far out of the way.
  2. Lord willing and the creek don't rise
    As close as you can get to saying you'll 100% do something
  3. Whatchu know good?
    A greeting. Like tell me what good things you know. Nice, right?
  4. A face that could make a freight train take a dirt road
    Now that's ugly.
  5. Uglier than homemade soap
    Also ugly, I guess. Homemade soap sounds kind of artisan nowadays though.
  6. Plum out
    As in "I'm plum out of list ideas."
  7. I don't have a dog in that fight.
    I'm staying out of it. It doesn't have anything to do with me.
  8. Whistle britches
    Someone who needs a lot of attention, vain, thinks themselves to be better and smarter but is really an idiot. Often dressing in a hilarious fashion. "Go ask whistle britches."
  9. Acting ugly
    Is this southern? I suspect it is. As well as "being ugly."
  10. Out of pocket
    Meaning, no one can find you. "I tried to call you, but you were out of pocket all afternoon."