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"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.
"I am Mork from Ork. Greetings, I come in peace, Na-Nu Na-Nu....!!!"

***Proper credit must be given to the true comic genius of Robin McLaurin Williams (July 21, 1951 – August 11, 2014) R.I.P.
by green eyed lady 13 August 18, 2014
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Jul 3 Word of the Day
Your a Grillbilly when your grill is the nicest thing about your house.
You know your a Grillbilly when your house is falling apart and you have a beautiful stainless steel grill.
by hakkon218 February 02, 2010
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2
phrase used in the mid 70's early 80's ABC TV show "Mork and
Mindy".Usually as a greeting.
Mork "Na-nu-na-nu, my name is Mork from Ork.
by crooked pinky toe April 11, 2008
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3
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
"I am Mork from Ork, Nanu Nanu."
by BruinKiller3469 March 23, 2009
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5
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.
by BURKY August 18, 2003
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6
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
"I just cannot wrap my head around this, it's as if his Nanu Nanu went from white hot to a flicker...go figure. Ya gotta admit, the guy had an amazing run".
by RAEGUN SPARKS August 14, 2014
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