It's a playground song, extremely silly, and I doubt it's ever been recorded, but it goes...

I ulllellloosed to plllalllay my olllollllold banjolllolooo
And relllelllest it olllolllonnn my kneeeleeleeleleeeee
But nowlolooow my strilllilings are brolllollloken alllallland it's
Nolollooo more ullellooose to meeleleeleleelelee.

I toololoook it toololooo a ballallanjo shollolop
To seelelee what theyleley could dololoololooo
They selleled your strillillings are brollolloken alllallland it's
Nolollooo more ullellooose to youloloololoololoo.

My sister and I can't keep a straight face when singing it and neither can any member of the family, so we used to use it when we were in trouble with the parentals - worked every time ;-) We also soundchecked with it at a recent open mic night and had people giggling away.