One of the nighty-nighty songs my mom used to sing to me went:
The worms go in
The worms go out
The worms came out of his little snout
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