Anyone know some good online sources on nursery rhymes. I'm looking for just the text? Not too keen on the actual singing. And certainly not pictures.

Err... google?

John, they were kind enough to provide me with some good resources. Maybe someone here has some more and perhaps even better.

Why in fuck would anyone here know where to find a cache of nursery rhymes?

Have you considered:

a) who you're asking
b) why the fuck you're looking for nursery rhymes, you pervert?

This is from my Mad Magazine from the mid 70's (from memory- Sorry about  spellings, going off the top of my head)
MikeG

Little Miss Muffet is sharing her tuffet
with Bo 'Peep and Solomen Grundy
Georgie Porgie was seen at an orgie
with Olde Mother Hubbard last Sunday

Seems Little Boy blue gets it on in the shoe
because he heard the old woman is kinky
As for Jack Splat well his wife left him flat
and is now living with Wee Willy Winky

Either you're mistaken as to the source, or Mad Magazine was WAY more risque in the 70's than it was in the 80's.

Definitely Mad Magazine.  It might have been early 80. 
Mike