Two men met at a bus stop and struck up a conversation. One of them kept complaining of family problems. Finally, the other man said:
“You think you have family problems? Listen to my situation. A few years ago I met a young widow with a grown-up daughter and we got married”. “Later my father married my step daughter. That made my step daughter my stepmother and my father became my stepson. Also, my wife became mother in-law of her father-in-law. Then the daughter of my wife, my stepmother, had a son. This boy was my half-brother because he was my father’s son, but he was also the son of my wife’s daughter which made him my wife’s grand-son. That made me the grandfather of my half-brother.
“This was nothing until my wife and I had a son. Now the half-sister of my son, my stepmother, is also the grandmother. “This makes my father the brother-in-law of my child, whose stepsister is my father’s wife, I’m my stepmother’s brother-in-law, my wife is her own child’s aunt, my son is my father’s nephew and I’m my own grandfather!
I think this is a song already…
The song is called I’m my own grandpa by Lonso and Oscar it was released in 1939