Top Definition
Proof of one being a ninja, or proof of ninjaness.
This can be done by a photo of you as a ninja(face cant be fully shown, and camra man must die), giving a piece of knolage known only by ninjas, or disapearing like a ninja.
Failure to prove ones Ninjality will resualt in death or the title of a wannabee ninja... which is equal to death... only a ninja may ask for proof of Ninjality....

{note} a Quazi Ninja may ask for proof of Ninjality as well
Ninja: do you have proof of Ninjality?
ninja wannabee: what ality?
Ninja: ~has now decapated wannabee~
by Kuronin June 12, 2007

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