This is the verse that I remember, a little different from the other posts:
The height of a piggy's ambition,
from the day he was born,
in hopes that he would be good enough,
to be a Frosty Morn!

Maybe it's incorrect, but it's burned into my 49 y.o. memory as such. I certainly remember the tune and can play it on the piano! The tune is similar to the old Gospel hymn, "Wonderful words of life"...