I've been looking for this song for years and have never been able to find it!
I heard it at Towersy in (I think) 1996. Possibly in the Village hall, but I've got no idea who sung it.
the chorus went;
Oh a Noise annoys an oyster,
but a noisy noise annoys an oyster more,
when the west wind whistles through the whiskers of a shrimp,
the poor old oyster feels a trifle limp,
He'll murder mussles if the seaweed rustles,
or the cockel sings a chorus on the shore,
oh a noise annoys an oyster,
but a noisy noise annoys an oyster more.