I learned this song when I was little in the '40's, though I am sure it is older than that. I don't know if they are two separate songs, they seem so unrelated but I was taught them together. The first part I have been able to find a bit about, but can find no reference to the second part which was sung with great drama and a long drawn out last words on the last two lines. I remember being just stunned with the ridiculousness and at the age of 3 or 4, it was one of the first jokes I learned. It still seems unfathomable!

Oh there was a little man
and he had a little can
and he went to rush the growler.
He went to a saloon
On a Sunday afternoon
And you outta hear the old man holler:
"No booze today. No booze today"
Come around again on Monday.

She was the only girl I loved,
Had a face like a horse and buggy
I left her leaning against the lake,
Oh Fireman, save my child!