Ebay always seems to have copies of Oscar Brand's albums "Bawdy Songs and Backroom Ballads" (at least 3 volumes that I know of.) Even though he did bowdlerize a bit, some of songs are still pretty questionable.
Cats on the rooftop, cats on the tiles Cats with the clap and the crabs and the piles Cats with their butts all wreathed in smiles As they revel in the throws of fornication.