I am a native North Carolinian, and I have NEVER used this phrase. I am beginning to hear it used a lot too, but it's the younger generation who uses it. I am also noticing people saying, "I church with them" meaning, I attend church with them. Another one that bothers me is "I am excited for the party". The party cannot be excited, so I'm not sure how you can be excited "for" it. You can be excited about it or you can be excited for your sister who will be attending the party.