A slang term for women in general, wherein it references the body's rear end cheeks together with a females labia and vaginal lips to form one continual "split" from front waist to read waist.. Males do not share this anatomical characteristic.
My grandpa keeps asking me if I have beencourting any split-tails lately .. I answer no but with a smile on my face.
What rednecks and hillbillies call the human female on account of the fact that, when seen in the nude and from behind, the female genitalia (i.e. labia) looks like a tiny, split-in-half tail.