nou is a shortened version of "no you" and is the most response in existence, whether as a comeback or a random comment with no purpose.

--should be used in all caps for maximum effect "NOU"

1. Dad "Take out the trash."

Kid "NOU"

2. Girl "I love you."

Kid "NOU"
by NOU!! April 16, 2010
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The one and only continuous never ending debate with a single argument, being the counter argument itself. Several persons may join the debate at any time, not causing any interruption or disruption.
(... Hours later)

-no u
-No you.
-No u.
-Hi there...
-no you.
-no u
-No you
-no uu
-NO you
-NOu YoU
-no uou
-no you
-no u

by #Hole January 16, 2010
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Used as a rebuttal.
Originated on the glorious 4chan.
When opposing a comment or post : No U!, means "No, you are!"

Pedofan : You are a faggot Moot!
Moot : NO U!
Pedofan : You are a faggot Moot!
Moot : NO U!
by seer September 28, 2005
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The perfect comeback to any insult that is thrown at you. If you keep saying nou then the person offending you will get annoyed and stop :).
by Manbungoed July 28, 2010
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Derived from the world of chan, nou is the universal comeback to any statement when one has no intelligent comeback, or simply wants to be an arrogant asshole. It as an acronym for No you, or no u.

Unlike the famous "lol" or "omg" this word has a very poor chance of being remembered as an internet acronym, so stop using it. Gaia fagggots.

Now more commonly typed as "nou", rather than "no you" or "no u".

Using this word in an argument may cause your friends to think you as simple minded/retarded/a dick.
1: fishluv24: Why are you and Rachael going out? She's ugly as fuck, dude!
datwunguiolol: nou (No, you)

2: Phone: Jeremy? Hey, I need you to go pick up supper for me. It's getting late and your sister is probably hungry.
Teen: nou (No, you)
by Indeeeeee July 25, 2008
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