Top Definition
The best ninja there is. He can be anywhere at once. No other ninja can beat him.
Dude, did you hear about how josh went through space ninja training?
by ninja113 October 16, 2010
1 more definition
1.) The ultimate ending of all arguements, with absolute no exceptions.
Stuck in an arguement and the other person won't give up? well me and my buddies decided space ninjas is the best way to drop the conversation, if he picks it up again, you officially, by Urban Dictionary law get 3 free punches, anywhere, any time.
by Captin IceBreaker February 22, 2011

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