"It's snowing down south!!!"

"It's snowing down south!!!" Anyone remember that expression? Anyone know what it means? Anyone know what a slip is? Anyone remember when women used to wear slips? In the not so old days, women (no matter how young) couldn't wear pants to school; they had to wear dresses, or skirts and blouses. If a gal's slip was showing below the lower hem of her dress or the lower hem of her skirt, she would be reminded by all around her that she should correct the problem (immediately if not sooner), the critic reminding the errant young woman by using the code words, "It's snowing down south!!!" Now, dear reader, Marash Girl must ask you. "Do you know what a slip is?"