There's a wonderful Australian collection of children's rhymes and parodies called "Cinderella dressed in yella", published in 1969. Try your local libraries! In the meantime, here's some nursery rhymes:

Little Boy Blue come blow your horn,
The sheep are in the meadow,
The cows are in the corn.
Where's that boy who should be guarding the sheep?
Under the haystack with Little Bo-Peep.

Little Bo-Peep has lost her sheep,
She looks for them sedately.
I hope she finds them very soon,
Because we've had no lamb chops lately.

Hey diddle diddle,
The cat did a piddle
Right in the middle of the floor.
The little dog laughed
To see such fun,
And the cat did a little bit more.

Little Miss Muffet sat on her tuffet
Eating her curds and whey.
Along came a spider and sat down beside her
And Little Miss Muffet said, "Rack off, hairy legs".

Mary, Mary, quite contrary,
How does your garden grow?
-- Up, stupid!

Old Mother Hubbard
Went to the cupboard
To get her daughter a dress,
But when she got there
The cupboard was bare,
And so was her daughter I guess.

and, for an encore:

My old man's a dustman,
He wears a dustman's hat.
Farted through the keyhole
And paralysed the cat.