I love how the Southerns make positive sounding things into insults. "I'll pray for you" or "Bless your heart" are my favourites. When I worked in customer service, if someone was being a straight up cuntomer, I would make sure to use "Sir" or "Maam" in every other sentence. Fuckers thought I was actually saying it because I respected them, and if they ever did accuse me of mocking them I could play dumb.