I remember Roaring Jelly in the 70s singing a couple of verses that they probably wrote themselves:

[from memory]
Though my old man's a dustman, I'd have you all to know
He used to be a dentist many years ago
He got struck off the register, it really was pathetic
He was doing things to ladies that were under anesthetic.

Though my old man's a dustman, I'd have have you to know
He used to be a policeman, many years ago
You'd often see him there, walking round Soho
I said "Do you have relations there?" "Yeah, every time I go".

Enjoy

Tradsinger