I had to dig into my roots for Pure Dumb Luck. Eddie, in particular, has some choice southern phrases. My adoptive family are mostly centered in North Carolina, so I was able to pull from my memory for some amusing ones.
Here are just a few of my favourites:
1. Bless Your Heart, the quintessential phrase that can be anything from a curse to an insult to a comforting statement.
2. Kiss My Grass
3. Crud Muffin
4. Mother Trucker
5. Fart Knocker
6. Shut Your Pie Hole
Bless your heart is still my favourite (and one I use occasionally.)