I'm sure I've made some errors here but tis is what I recall from the only time I heard it, in 1964, by a fellow student in our botany class.

When the Lord made Adam, they say he laughed and sang
as he sewed him up the middle with a little bit of whang
but when the Lord had finished, he found he'd measured wrong,
'cause the little bit of whang he'd left was several inches long,

And when the Lord made Mother Eve he finished with a snort
for the little piece of whang he'd used was several inches short
The Lord then said "Oh stuff it! I'll let the matter hang;
she can fight it out with Adam for his little bit of whang.

Then follows a third verse which explains the world's trouble and strife being due to the two of them and their descendants fighting over that little bit of whang.

Cheers, Rowan