2 definitions by Ryan Riggs

A variant on he word noob or nub.

It implies that the person being called it is American and therefore stereotypically fat and aggressive. Which are traits hat hippos also have as well as Americans.

It originated in 2007 Sep 18th when I was bored in school and made up a random word.
American (Out of breath from talking): WTF I just got pwned again.
Non american: Thats because your a noobapotamus.
by Ryan Riggs September 19, 2007
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A useless 2 letters which can mean one of he following two things when somebody asks whats up?

Not much.

Or the more common one of..

I cant be bothered to tell you, so no much.

It is a real conversation maker which could lead you no to the same conversation you always have.
Person A: Hi
Person B: Hi
Person A: Whats up
Person B: NM, you?
Person A: NM
Person B: Cool
by Ryan Riggs September 19, 2007
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