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1.
1. To be as stealthy as a cat and a ninja combined.

2. a house cat that has dedicated its life to the ninja life style.

3. a ninja who wears cat ears.
you have to be quick, like a cat... or a ninja, or a cat ninja.
by bnate April 09, 2010
 
2.
It has been said that long, long ago, a young boy who was but only 9 years old, witness the gruesome and brutal murder of his beloved parents by the " Hell Hounds" an international street gang/mafia/bad guys...poor little boy found himself wondering on the lonely and terrifying streets.

When something....

Something unbelievable happened !!

A big black cat with a ninja mask and a scratch on it's left eye with gray spiky hair has taken that boy and desided to raise him like one of its own.

9 years have past since then...the young boy has finally become a man and has been taught and trained by the black cat which at the end made the boy become the first ever Cat Ninja, after that, the cat ninja swore that he will find the Hell Hounds and kill every last one of them.

...and so he did
Bad guy: Give me your money, jewelry and BBQ !

Civilian: Never ! because i've just called Cat Ninja :)

Bad guy: OOOHH FISH BALLS !!!
by DannyRanDazzle May 24, 2011