Notes
This is not properly a vaudeville song; its popularity comes from military and collegiate sources.

This can be sung to "My Bonnie Lies Over the Ocean."

The first version was popular in Los Angeles in 1960, although its antecedents go back to military sources. The second version is from Indiana University's rugby team, ca. 1966. See Cray, The Erotic Muse, pp.243-245.
Lyrics

Oh, the sexual life of the camel
Is stranger than anyone thinks.
In moments of amorous passion,
He frequently buggers the Sphinx.

But the Sphinx's posterior passage
Is clogged with the sands of the Nile,
Which accounts for the hump on the camel,
And the Sphinx's inscrutable smile.

Alternate version:

The sexual life of the camel
Is stranger than anyone thinks.
At the height of the mating season,
He tries to bugger the sphinx.
But the sphinx's posterior sphincter
Is clogged by the sands of the Nile,
Which accounts for the hump on the camel
And the sphinx's inscrutable smile.