We Southerners have plenty of "slang" phrases --
happy as a dead pig in the sunshine;
she could make a preacher cuss;'
of course - Y'all come back now.
madder than a wet hen
slippery than a greased pig.
However, poor grammar does irritate me - esp. since I am a retired teacher. I esp. hate "I done it, I seen it," instead of did and saw!
No offense to anyone - that's just a couple of phrases I tried to make "sink" into my students' heads!