He who shits in close proximity to others without being noticed.
Guy 1: Who in the hell shit on my shoe?

Guy 2: Looks like we have a Shit Ninja on our hands!
by ksarmyguy December 21, 2008
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what douchebag video game nerds call you when they cant think of anything else to say.
video game nerd: why did you trip me down the stairs jackass?

me: fight me?

video game nerd: you know what! YOUR A SHIT NINJA!
by Grantino October 30, 2007
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When diarrhea or mexican food sneaks up on you at a random time.
Boss: "Why weren't you at work Bob?"
Bob: "Well I was at my daughters play then i got a case of ninja shits."
by Chupa Mi Verdga August 9, 2014
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