One of the wonderful skits from The Muppet show
. "Mah Nà Mah Nà" was originally written by Piero Umiliani for the Italian movie "Svezia, Inferno e Paradiso" (Sweden, Heaven and Hell) (1968), a pseudo-documentary film about sexual behavior in Sweden. The song later became familiar to many from its renditions by the Muppets on US television.