Dangerous Dan McGrew

Some of the boys were whooping it up in one of them Yukon halls,
The kid that played the music box stood leisurely scratching his balls
The Faro kid had his hand on the box of a girl named Sue
While down of the floor on top of a whore
Was Dangerous Dan McGrew.

Then , out of the dark that was black as a bitch and into the din and smoke stepped a shaky old prick with a ---inch dick
And a rusty load in his poke.
In his ragged clothes he stood ready to hose anything that came his way
He dangled his dong with a talented hand and howled that he wanted to play.
The lights went out and I fell to the floor as the stranger sprang in the dark

maybe a line missing here...,

With might and main and a great scream of pain a man's voice filled the room
With sighs and moans and farts and groans three forms lay stacked in the gloom,
The lights came on and the stranger rose with a satisfied look on his pan, and down on the floor with his asshole tore was poor old corn holed Dan.