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.
Correction:
All goes WELL for about a week
You people are sick!
We sang the last verse "Your liver turns a funny green. Your guts pop out like whipping cream."