My friend from Georgia says, "Y'all" like y'all the time. I asked her if she ever says, "witcha didja" and admittedly she does. ["you didn't bring your laptop witcha didja?"]
I grew up using the word, "guy" all the time. "Let's go guys! Where were you guys? Guy! (as in "shoot" or "shucks") and Hey Guys!" are a few of my most popular phrases.
I also prefer "holy cow" and "goodness" sprinkled in with other words that usually remain tucked beneath my breath, in a whisper.
It is also a requirement that if you are from So. Cal you have to use the words, "awesome," "totally," and "heinous." (We had a totally awesome day at the beach, even though I got a totally heinous sunburn.)
I don't make the rules, I just do what I'm told. Guy!