Mah Nà Mah Nà - for the record

I've been using a "Pointless Thought of the Day" trivia question at gigs lately:

Where did the song "Mah Nà Mah Nà" originally come from?

The obvious guess's of Sesame Street and The Muppet Show are wrong. I got to correct myself, it was not Swedish Porno film it was an Italian Porno film with a Swedish title.

The definitive answer:

"Mah Nà Mah Nà" debuted as part of Umiliani's soundtrack for the Italian softcore pornography movie Svezia, inferno e paradiso (Sweden: Heaven and Hell) (1968), a pseudo-documentary film about wild sexual activity and other behavior in Sweden ("Mah Nà Mah Nà" accompanied a scene set in a sauna). A soundtrack album, "Svezia, Inferno e Paradiso" was released in 1968. The movie was also released under the English title Sweden Heaven and Hell.
SOURCE