one's own work or abilities before
presenting them as to soften the blow
of possible rejection.
Takes the form of "Well, it's not very good, but..." or the like.
Comes from the old southern tradition of playing down one's food cooked
or family. "The dough didn't rise how I was hoping..." etc.
Sarah went to the front of the class to give her speech.
"Ok." She said, "but just know I was up late last
night and I don't think I'll be very good at the assignment
"Please don't southern-biscuit, Sarah." Replied her teacher. "I'm sure you'll do fine."