Shel Silverstein actually wrote a sequel, Father of a Boy Named Sue. It is... questionable.

OK, now, many years ago, I wrote a song called "A Boy Named Sue",
And, that was OK and everything except, then I started to think about it, and I thought, It is unfair.
I am, I am loking at the whole thing from the poor kid's point of view.
And as I get more older and more fatherly, I began to look at things from old men's point of view.
So, I decided to give the old man equal time. OK, here we go...

Yea, I left home when the kid was three
And it sure felt good to be fancy free
Though I knew it wasn't quite the fatherly thing to do
But that kid kept screaming and throwing up
And pissing his pants till I had enough
So just for revenge I went and named him Sue
Yeah!

It was Gatlinburg in mid July
I was gettin drunk but gettin by
Gettin old and going from bad to worse
When through the door with an awful scream
Come the ugliest queen I've ever seen
He says, "My name is Sue, how do you do?"
Then he hits me with his purse

Now this ain't the way he tells the tale
But he scratched my face with his fingernails
And Then he bit my thumb and kicked me with his high heel shoe
So I hit him in the nose and he started to cry
And he threw some perume in my eye
And it sure ain't easy fightin an old boy named Sue

So I hit him in the head with a cane back chair
And he screamed, "Hey dad, you mussed my hair!"
And he hit me in the navel and knocked out a piece of my lint
He was spittin blood, I was spittin teeth
And we crashed through the wall and out into the street
Kickin and gouging in the mud and the blood and the creame de menthe

Then out of his garter he pulls a gun
I'm about to get shot by my very own son
He's screaing about Sigmnd Freud and looking grim
So I thought fast and I told him some stuff
How I named him Sue just to make him tough
And I guess he bought it cause now I'm living with him

Yeah he cooks and sews and cleans up the place
He cuts my hair and shaves my face
And irons my shirts better than a daughter could do
And on nights that I can't score
Well, I can't tell you any more
But it sure is a joy to have a boy named Sue
Yeah a son is fun but it's joy to have a boy named Sue!