The following versions can be found at this site.
“Don’t you ever laugh as the hearse goes by,
For you may be the next to die.
They wrap you up in a big white sheet
From your head down to your feet.
They put you in a big black box
And cover you up with dirt and rocks.
All goes well for about a week,
Then your coffin begins to leak.
The worms crawl in, the worms crawl out,
The worms play pinochle on your snout.
They eat your eyes, they eat your nose,
They eat the jelly between your toes.
A big green worm with rolling eyes
Crawls in your stomach and out your eyes.
Your stomach turns a slimy green,
And pus pours out like whipping cream.
You spread it on a slice of bread,
And that’s what you eat when you are dead.”
" Don’t you laugh as the hearse goes by,
for you may be the next to die.
The undertaker takes you in,
while all your relatives sit and grin.
They wrap you up in a big white sheet,
and bury you under about six feet deep.
Everything’s fine for about a week,
and then the casket begins to leak.
The worms crawl in, the worms crawl out,
the worms play pinochle on your snout.
Your liver turns a ghastly green,
and puffs right up like whipping cream.
you sop it up with a piece of bread,
and that’s what you eat when you are dead. "
Apparantly there is a collection of songs…“The Worm Song and Other Tasty Tunes”, collected by Janet Wilson and published by Scholastic
Their version as quoted on this site as…
"Don’t ever laugh when the hearse goes by
Or you may be the next to die
Ah-ooo! Ah-ooo!
They’ll wrap you up in a clean white sheet
And put you down about six feet deep
Ah-oo! Ah-ooo!
And all goes well for about a week
And then your coffin begins to leak
Ah-ooo! Ah-ooo!
The worms crawl in, the worms crawl out
The worms play pinochle on your snout
Ah-ooo! Ah-ooo!
They eat your eyes, they eat your nose
They eat the jelly between your toes
Ah-ooo! Ah-ooo!
They eat your clothes, they eat your hat
They crawl in skinny, then they crawl out fat
Ah-ooo! Ah-ooo!
Then you turn disgustingly green
Your skin as slimy as whipping cream
Ah-ooo! Ah-ooo!
So next time you see the hearse go by
Watch out!
You may be the next (pause)
To (pause)
Die! "