How Y’all Doin’? That IS “Hi” or “Hello” down south.
That is the way you have to answer the phone down in Memphis. Probably pretty much of the “south” south.
And, also, it is just so much fun to use that courtesy while speaking to a Yank, they never see the smack down they just received in a courteous manner. rofl.
Southerners can give you a smack down, and make you like it. Newt is a pro at this.