He's His Own Grandpa

 Now, many, many years ago
When I was twenty three
I was  married to a widow
Pretty as could be.

This widow had a grown up daughter
With flowing hair of red,

My father fell in love with her
And soon the two were wed.

This made my dad my son-in-law
And changed my very life.
My daughter was my mother,
For she was my father's wife.

To complicate the matters worse
Although it brought me joy,

I soon became the father
Of a bouncing baby boy.

My little baby then became
A brother-in-law to dad,
And so became my uncle,
Though it made me very sad.

For if he was my uncle,
 That also made him brother
To the widow's grown up daughter,
Who of course was my step-mother.

Father's wife then had a son
Who kept them on the run,

And he became my grandson
For he was my daughter's son.

My wife is now my mother's mother
And it makes me blue.
Because although she is my wife,
She's now my Grandma too.

I'm my own Grandpa

(He's his own Grandpa)

It sounds funny I know, but it really is so

 For I'm my own Grandpa

For now I have become
The strangest case you ever saw,
As the husband of my grandmother,