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1.
A ninka is a ninja that loves waffles, frequently saves helpless girlies from Micheal Jackson and Jiffy Pops of Doom. Often hides outside windows.
d00d! Lyke! Andrew is such a freakin' ninka!
by Kati & MooMoo March 12, 2007
 
2.
Ninka is the word Ninja in disguise.
Ninka != Ninja
by HOWDYASDF January 28, 2010
 
3.
Cousin of the ninja. Not quite as cool, but still pretty cool.
I am a ninka! Look at me deliver this vicious flying kick!
by The Great Philzini May 16, 2007