You know you're in the south when you have to differentiate your choice of teas. You can't just say "tea" in a restaurant (or even a fast food joint). You have to say sun tea, hot tea, or sweet tea. It's just one of those things one forgets about when coming from the west.
Another is the fact that when you ask someone how they are, they actually TELL you. At Waffle House, we heard all about the server's long day and her other job. At Cracker Barrel, we heard all about a vacation one of the ladies went on. Even at Walmart, you get the full story and not the western "good, how are you?" that comes so naturally. I LOVE it! It just makes your day wonderful, getting to know people you've never met and share in their lives, even if it's only for thirty seconds.
The last is the music. I was listening to the radio, and they bleep out the funniest words. In Sacramento, the radio stations hardly ever bleep out a word, but here, they can't even say the word "drugs" without getting censored. And they listen to gospel music everywhere! I went to lunch at a Chinese buffet with one of my new coworkers and they were playing worship music! I don't think I've ever heard blatantly religious music in a public place before, other than a religious family-based establishment or religious store of some sort.
Welcome to the south!