Just found this site. LOVE IT! When my kids were little, 40 years ago, we used to listen to a different version of the Corcodile song than the ones listed. I thought it was recorded by Jimmie Rodgers , the folk singer who did Honeycomb, but I can't find the recording anywhere. The words went like this:

Now gather around me children, to tell the truth I'm bound.
Here's a story 'bout when I went to sea, & the wonders that I found.
Shipwrecked was I one wintry day, & cast out on the shore.
I decided I'd wander away, the country to explore, The country to explore
Well I had not long walked about, when there beside the ocean,
'twas there that I saw something move, like all the earth in motion.
Well I steered close beside the thing, & I saw it was a great big crocodile,
From the end of its nose to the tip of its tail
'twas about 500 miles, 'twas about 500 miles.

Well this crocodile I could plainly see was none of the common race,
and I had to climb a big tall tree before I could see its face.
But the wind was ablowing so hard up there,
It was blowing a gale from the south, that I lost my hold on the big tall tree, and I fell right into the crocodile's mouth,
Smack dab into the crocodile's mouth.

Well the crocodile closed his jaws on me, he was going to have a victim.
But I ran down his throat you see, & that's the way that I tricked him.
And I wandered around for a year or two, till I finally reached his craw,
And there were rum kegs, not a few & a thousand pullets in store, in store, a thousand pullets in store.
And I wandered around for a year or more,
for grub I wasn't stinted, & I lived in the crocodile 10 years,
very very well contented, very very well contented.

Well the crocodile was very very old and at late long last he died.
And he took nine months to catch a cold, cause he was so long and wide.
And his skin was 10 miles thick I think, or somewhere's thereabouts, cause I was fully 6 months boys in a-digging my way
ou-ou-ou-ou-ou-ou-out