A penis that is small and hard to see in the dark, just like a ninja.

A cock that is lean and strong, able to move from position to position with incredible sensual speed. The ninja cock is secretly wanted by all females and unlocks secret, unknown depths of pleasure when used properly.

A giant cock that hits a bitch so hard she can't feel or even comprehend it's awesomeness, and therefore cums 9,200 times after the ninja cock leaves.

A cock so powerful and overwhelming that you have no idea what to do with it. An elite warrior. It is very speedy and unable to be tamed, specialising in a vast array of martial arts. The ninja cock has multiple times the power of a normal cock, and those who possess a ninja cock have a high ranking within their society. Only the very worthy come into contact with the ninja cock as it is very special.

Your penis is the sword. When fruit is tossed into the air you slice it with your rock hard cock. i.e. your ninja cock

a small little wiener that is hard and hard to see at night when used properly it can be effective against the female species. Also a sneak fuck from pussy to ass.

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.