The first four notes of Beethoven's Fifth symphony, which are particularly memorable and ominous sounding. Used to indicate potential doom and disaster.
"That guy you just pissed off is a hitman for the mafia. Ta na na naa..."

"Hey, did you hear the world was about to end? Ta na na naa..."

"Hey, honey... I have AIDS. Ta na na naa..."
by FlanlikePlan June 25, 2009
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Caveman brain kicking in during a boring lecture. Meaning: unknown.
*lecturer* "bla bla bla..."
*you* "bla haba bubu naa"
by superchow April 26, 2004
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A way for stupid twitter people to try to follow a trend by asking twitter people to provide their opinions which they provide anyway.
Twitter user 1: Sco pa tu ma naa (with an object or person pictured)?

Twitter user 2: I hate said object
by Thomythano July 26, 2019
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Only the best movie of all times, like it’s about Naina, a girl living a dreary life, finds a new meaning to her life when she meets Aman. Even though she loves him, Aman claims to be a married man and convinces Rohit, her friend, to woo her. Only weirdos will cry at this though
person 1: OMG did you watch kal ho naa ho

person 2: yes it’s only the best film of all times
by Stacey Dover February 15, 2020
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1) A way of saying 'no' to people with names beginning with 'Hus' E.G Hussain, Hussan.
Hussain asked 'do you fancy me?'
Alia replied 'Hus-NAA!'
by funkyfish December 22, 2010
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A film that was produced by Karan Johar that is the best film out there. It is about Dev and Maya first meet at Mayas wedding where he gives her some advice. 4 years later they meet again. They go to a party and discuss that they don’t like parties where they sing the song Rock n Roll Soniye. Later on Dev and Maya meet a train station and ask for a hand in friendship to salvage their marriages but instead they fall in love with each other which then makes them grow further and further apart from their partner. They sleep together and it all comes out and Amitabh Bachan has a heart attack
Person 1: Oh my dosa dude, what’s your favourite film
Person 2: Definetely Kabhi Alvida Naa Kehna
by Stacey Dover February 22, 2020
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NAA is the abbreviation for one of the new challenges the average man will face if he wishes to try. NAA stands for "No Ass April" where a man is test himself to go the whole month of April with out putting his dick in the ass.
Jake: Bro Imma try this new challenge called NAA (NO ASS APRIL)
Max: Uhm okay good luck
by Astafrulla January 29, 2023
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