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1.
Naitan can be used for many purposes. It can be used to show dominance, in coordination with a smashing motion with both fists. It can also be used as a verbal laxative, or when you just want to say something that sounds cool when you grunt it in a caveman voice. But you have to say it in the caveman voice.
Example #1
Guy: UR A PUSSY!!!
Me: NAITAN!!! EITAN NAITAN SAITAN!!!

Example #2
Guy: im bored
Me: NAITAN!!! naitan naitan NAITAN NAITAN!!!
by gidetan October 20, 2007
 
2.
Nothing, nada, no. also pronounced,"Naithan"
I wasn't 'sposed to do naitan today.
Man, there ain't naitan today.
by eric January 21, 2004