Dumpy the Turtle

Here is a silly little book I picked up recently at a thrift shop for 10 cents. I picked it up simply because the cover made me giggle. Dumpy the turtle. I thought that Dumpy had to be the name of a turtle from Europe or some other country where perhaps Dumpy meant something completely different from what it meant to me. But when I opened the front cover I found that the book was published by the Samuel Lowe Company, Kenosha, Wisconsin, 1970. Written by Lucy Macdonald and illustrated by Cathryn Taylor.
Here is what is says about Dumpy on the inside front cover:
Once there was a little turtle who lived in the woods at the edge of a pond. He had a heavy shell which weighed him down so that he got around very slowly. He was SO slow that he was called Dumpy.
So... next time one of your friends or co-workers seems to be going in slow motion, you can now call them Dumpy! Makes sense to me.