I Am My Own Grandpa

Many, many years ago when I was 23
 I was married to a widow who was pretty as can be
 Now this widow had a grownup daughter who had hair of red
 My father fell in love with her and soon they two were wed
 This made my dad my son-in-law
 And changed my very life
 For my daughter was now my mother
 For she was my father's wife
 To complicate the matter,
 Even though it brought me joy
 I soon became the father of a bouncing baby boy
 That little baby then became a brother-in-law to Dad
 So my son was my uncle and it made me kind of sad
 For if he was my uncle then he also was a brother
 To the widow's grown-up daughter
 Who, of course, was my step-mother
 Well the father's wife then had a son
 which kept them on the run
 And he became my grandchild for he was my daughter's son
 My wife is now my mother's mother and it makes me blue
 For even though she is my wife, she's my grandmother, too
 And if she is my grandmother and I'm her grandchild,
 And every time I think of it it nearly drives me wild
 For now I have become the strangest case you ever saw
 As the husband of my grandmother, I am my own grandpa
 I am my own grandpa
 I am my own grandpa
 It sounds funny, I know, but it really is so
 I am my own grandpa