Anything by Sid Kipper, probably the Whistling Monologue if that can be called a parody, Wild Mounting Time?
Selby folksinger Mike Soar wrote a brilliant parody of Banks of the Sweet Primroses about going for a vasectomy. Wish I had got the words off him before he passed away.

BTW 'Deck of Cards' IS a parody of a parody of a parody......