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2.
Someone who sneaks into a residence in which the dweller lives by themself, then deficates in their toilet leaving no visable toilet paper and then does not flush.
Jessie got home to her apartment after a long day at work. She stepped into the bathroom to take a shower when she spotted the foreign monster in the toilet bowl... she knew then the brown ninja had struck again.
by dsackaroo January 23, 2013

Words related to brown ninja

brown dookie duece fart ghost ninja poop sbd toilet turd
 
1.
leaving a foul oder, usually in the form of a sbd fart for someone to walk into, unsuspectingly.
I just left a brown ninja for jeremy to walk into.
by rossta January 26, 2005