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2 definitions by Bike Man

 
1.
someone who operates a bicycle in dark or low light conditions with no lights or reflectors and usually wearing dark clothing. Ninja cyclists typically ride against traffic and/or on sidewalks in violation of local laws.
(after slamming on brakes) "I didnt even see that ninja cyclist blow that stop sign. I could have hit him"
by Bike Man November 03, 2009
 
2.
a person, typically an illegal alien, who rides his bicycle against traffic in violation of the law . Usually a wrong way jose will ride in low light conditions without using lights or reflectors
That wrong way jose is going to get hit one day.
by Bike Man November 12, 2009