Dirty rhymes from my childhood around about late 70’s thru 80’s.

Lulu had a baby, she named him tiny tim
She threw him in the pisspot to see if he could swim
He sank to the bottom, he floated to the top
Lulu got excited and grabbed him by the
Cocktail gingerale five cents a glass
If you do not like it you can kiss my
Ask me no more questions
tell me no more lies

It ends with something about flies.

There was a dirty christmas carol story

Twas the night before christmas
When all through the house
Everyone was stoned, even the mouse
My mother and father were smoking pot
And i just sat down to eat a twat
When upon the roof rose such a clatter
I jumped off my girlfriend to see whats the matter
When what should my eyes appear
A tiny sleigh, and eight horny reindeer
A fat old driver whipped out his dick
I knew that moment, it must be saint prick
He flew down the chimney pike a bat outta hell
I knew in a moment that old bastard fell
He filled the stockings with reefer and beer
And left a dildo for the family queer
I heard him exclaim as he flew outta site
Fuck you all and have a hell of a night.

Also a dirty version of “on top of spagetti” i only remember the first line
On top of ol smokey all covered with snow
Where the cock suckers work a nickel a blow

Anyone can finish that one?