Lightnin' Hopkins sings a song called Short-Haired Woman. The first verse goes:

I don't want no woman
Doesn't have hair no longer than mine
I don't want no woman
Doesn't have hair no longer than mine
She ain't good for nothing but trouble
That keep you buyin' rats all the time

What does buying rats have to do with all of these troublesome short-haired women? Is this some old superstition I've never heard of?