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docking is the act of putting something in your urethra. In layman's term, its the act of shoving a dildo up your penis hole. a ninja docker is some one who puts their penis up another penis so fast that the other person doesnt even feel it or know what just happened.
guy 1: i'm not sure what just happened but wow does my penis feel awesome.

guy 2: dude you just got ninjadocked


look at that dude he is such a ninja docker
by Dr McNinjaDocker September 21, 2011
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