Rednecks Unite! Poem by Thy Mother

My father is my brother
My sister, with three ears,
Is his significant other.

My sister is my mother
And somehow, also my brother
My father's father am I
The vile thought makes me shudder.

Grandma was a mule,
Grandfather's sperm, she used as fuel
A french aristrocrat,
Made love to my mother, for he prefered his women fat

A letter written for my eyes
Containing news of demine
Said my true mother was some other
And my father, not her brother.

Jubilant and joyous,
My wife is what used to by my sister.. Or brother?