Another variation... learned at Girl Scout camp (Detroit area in the late 60s):

Nobody likes me, everybody hates me
Think I'll go eat some worms
Long worms, short worms, skinny worms, fat worms,
Itty bitty, teeny weeny woo-oo-oorms

First you bite the head off
Then you suck the blood out
Then you throw the skins awaa-aa-aay
Nobody knows how I survive on worms three times a daa-aa-aay.

Repeat first verse.

Cheers,

YY