Dunno if it's the same song, but a large hairy individual called Ying Tong John ( Hi John if your out there !) a renound and LOUD folk circuit guy in the 80's, usedto sing the following words :-

Sweet Fanny Adams, She's beautiful blythe and gay.
I carved her name on the trunk of an apple tree One fine day.
The woodpeckers soon got busy, Pecked all her name away,
Now there's nothing left of Sweet Fanny Adams but Sweet F A !!!

I seriously think it was based on the original song!!!

Cheers
Spike