It's no wonder we often imitate a southern accent. Many of the great speech makers in early America orated with a drawl. Just talking to a person with a southern accent can conjure up the scent of a homemade meal. Humor, political candidates and country music all come off a little better when touched by southern charm. If you want to talk with a southern accent, it may be easier to learn than you think.
Buy a book or CD on the market if you want an elaborate education in the southern accent. Otherwise, just interchanging a few of your daily words with southern choices or understanding how to draw out some syllables will get you there.
Use "y'all" every chance you get. This is appropriate in referring to a single person or a group of people. Never say "going to" again but insert "fixin to" and you will already seem like a pro.
Stop differentiating the "e" and the "i" in a word. If you're doing it right, then someone should wonder whether you're wanting to sew or write when you ask for a "pen."
Take words and add some syllables. "Why" should be "waa" and then "eye." The word "nail" should be "nay" and then "eel."
Take two syllable words and shorten them to one, like change the "tar" (tire) on the car.
Perfect a small vocabulary. Purdy, reckon, awfullest, gol darned, critter and breetches, and tarnation are all a good place to start.