Taught to me by a neighbor girl who grew up to be a minister's wife, Peter Murphy is a naughty little ditty of the same sort as Miss Lucy had a steamboat, wherein the last line of each set suggests a taboo word that leads off the opening line of the next set of lines.

Peter Murphy had a dog, a very fine dog was he,
He gave him to a lady friend to keep her company.
She taught it, she taught it, she taught it how to jump.
It jumped up on her petticoat and bit her on her ...

Country boy, country boy, sitting on a rock.
Along came a bee and stung him on his ...

Cottontail, ginger ale, thirty cents a glass.
If you don't believe my story, shove it up your ...

Ask me no questions, I'll tell you no lies.
If you ever get hit with a bucket of sh**, be sure to close your eyes.