I'll bet that neither you or anyone else on this forum knows the origins of that song. In fact, I bet the folks at Sesame Street don't either. Otherwise they would never have used it on the show !
__________________ Don't worry … I've got the microfilm.
Weirdly enough, the original song is from an Italian soft-core porno movie called "Sweden - Heaven and Hell". Here is the link explaining the origins and incorporation into the Muppet song:
Either Jim Henson and his staff were in the dark as to the true origins of the song or they were perpetrating a clever inside joke for the adults "in the know" to enjoy while they were forced to listen to the Muppet songs ad nauseum.