[MarkL]

The worms go in

The worms go out

The worms came out of his little snout

I heard a slightly different version...

The worms crawl in,

The worms crawl out,

The worms play peanuckle on your snout

They put you on a slice of bread, and now you know what worms eat when you're dead!

Mark

[moonhawk]

"...The worms play peanuckle on your snout..."

I believe that would be "pinochle."

YMMV

[Collier]

Here's another version: (We used to sing it)

Have you ever seen a hearse go by
And think that you were the next to die?

They wrap you up in a bloody sheet
And then they bury you six feet deep.

All goes for about a week
And then your coffin begins to leak.

The worms crawl in
The worms crawl out
Into your stomach and out of your mouth.

Your stomach turns to a slimey green
And pus comes out like shaving cream.

[ScudBud]

yet another version, designed to by kids to make other kids giggle and say "eewwww!"
The worms crawl in
The worms crawl out
The worms play pinocchole on your snout

And then your stomach turns luscious green
And puss oozes out like whipped cream