SUPPOSE I IS U

I married a widow with a group up daughter. My father fell in love with my stepdaughter and married her. Thus, he becomes my son in law and my stepdaughter becomes my mother because she was my father's wife. My wife gave birth to a son who was of course my father's brother in law and my uncle, for he is the brother of my stepmother. My father's wife became a mother of a son. Who were of course my brother and my grand child for he was the son of my daughter? Accordingly, my wife was my grandmother because she was my mother's mother.
I was my wife's husband and grandchild at the same time as the husband of a person's grandmother is a grandfather, I am my own father