"Mork & Mindy" is a t.v. series that had aired from 1978 to 1982. The word "Na-Nu Na-Nu" is a greeting given by the main character of the show Mork, an alien from the planet Ork. (pronounced /ˈnɑ nu ˈnɑ nu /) The greeting is also accompanied along with a hand gesture similar to Mr. Spock's Vulcan salute from Star Trek, combined with a special handshake.

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phrase used in the mid 70's early 80's ABC TV show "Mork and
Mindy".Usually as a greeting.

A slang term which means hello or hi made famous in the t.v.series Mork & Mindy back in the late 1970's early 1980's

An apparent greeting among Scientologists.

index and middle finger in the shitter, and the "ring" finger and little finger in the mossy cottage....using the nanu nanu sighn from mork and mindy.

The alien life energy source that was ill suited to cope with the vicissitudes of human depression. Credited to the late Robin Williams reprised in his role as Mork from the oft times hilarious TV Sitcom "Mork and Mindy", 1978-1972