English Expression in Charlotte

People in Charlotte speak English with a particular Southern accent which I did not study at school.
I also notice some particular English expressions that I've never heard, partially because I am not exposed to the real English spoken in the life.

Here are some words and expressions I learned in the daily life

1.   Have a good one.

People in Charlotte say "have a good day" more than "have a nice day". I used to say "have a nice day", but change the habit to be more like Charlottean.

When it is in the evening (5:00 pm), you will be greeted "have a good evening" and "have a good night"... although you are not going to bed. When I leave the office in the evening, I usually say "have a good night". I want to say "have a good evening" but, it is a little too long for me to say.

But don't you think it is rather troublesome to choose the right phrase depending on the time? And so here comes "have a good one". This is a casual style use more by men than women.

I did not know the expression, and I was amazed when I first heard that phrase. Good one? Which one? .. well the blog below mentions the same thing
http://englishmaxims.seesaa.net/article/382845994.html

2.   Do what?

My English teacher keeps on saying that this expression is not logically correct, because it is nothiing to do with action. This is used when you ask the other person to repeat whatever the person has just said. "Say what?" is another version of this.

The sound of last "t" is barely audible.
This is a colloquial phrase used mostly by men.
I'm surprised but felt rather happy when my male colleague said this to me. I felt I am now treated as a local.

3.   Hey, dude

People in Charlotte use "Hey" more than "Hi", and "Dude" is used to address to someone, usually a man. This is again used mainly by men. I hear my male friend picking up a phone by saying "Hey, dude" or "What's up, dude".

The female equivalent of "dude" is "dudette", but I've never heard of it.

4.  High, Low, High (intonation)

This is about the intonation in the South.

The intonation is generally flat, and vowels are pronounced long and wide(?). But I think the general intonation style is "High, Low, High". When you count numbers for example, that'll be "One [high], Two [high], Three [high]".

.   Hibachi Style

.   Real Sushi

.  "Coffee person", "tea person", "icing person"