Thanks to Malystryx for the idea.
A is for alligator in your swimming pool, your sewer, or your stew
B is for "bless her heart", big hair, and beer
C is for country music, cow pies, and chicken livers fried
D is for dixie land
E is for Extreme Sports: 30 year old rednecks with a keg, dynamite, and an available sewer. Good times!
F is for furriner - anyone north of Tennesse or west of the Mason-Dixon line
G is for grits, gravy, and gun racks on every truck
H is for humidity the likes of which the rest of the country has never seen
I is for interpreter: what you need to understand people in the deep South
J is for Jack Daniels (Mr. Daniels if you're a furriner)
K is for Krispy Kreme
L is for livestock traffic reports (problems with poultry on Hwy 40...) and lawnmowers with v-8 engines.
M is for mosquitos the size of golf balls and Mullets (the always fashionable hair style of choice for the style-conscious redneck)
N is for NASCAR
O is for okra (okri if you're really backwoods)
P is for Piggly Wiggly, pecan pie, and pass the gravy
Q is for quantity (big hair, big families, big attitude)
R is for redneck (known by their accent and their fine assortment of broken down appliances displayed to best advantage on their front lawn)
S is for sweet tea
T is for turnip greens
U is for "U better get off my property, boy, before I reload my shotgun. I won't miss a second time."
V is for vinegar, required condiment for greens
W is for wild turkeys (by the dozens), the War of Northern Aggression, and Walmart
X is for xenophone (the inherent distrust southerners have of furriners from places like Idaho and Michigan)
Y is for "ya'll come back now, you hear?"
Z is for zig-zag, the pattern you must run to avoid a redneck's shotgun blast.
If I missed anything, feel free to add it with a comment!