1. One who is very skilled at handling cock. So skilled that their cock handling would be comparable to that of a ninja's preying mantis kick.
2. Can also be used as an insult usually inferring extreme homosexuality.
Wow, that kid was a giant cock ninja.
or
"Dude, that chick I nailed last night was a total cock ninja."
"Damn, I'd give my left nut for a night with her."
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