Ninja Fucking

To fornicate a person, or being, without them knowing or noticing; Also slang for succesfully using the "date rape drug"

1.To have sex without a sound
2. To have sex without the other person knowing

To have sex in an extremly fast, violent, but pleasurable (for both parties) event. The idea of "Fucking like a Ninja" is to get in, out, and off, before you can get caught, be it by parents, angry spouses, or even the police, in some rare occasions.

To have sex in a quick and intense manner.

To penetrate another person without that person having knowledge or noticing.

When you ( a male) is having sex with two other people ( male or female) and you fuck them in the butts back to back. Hence, you see an ASS, you see an ASS, and you went IN, or assassin ( which is a word used to describe a ninja).

boy who has a large pimple on his ear that is like the rainbow, and has 2 small polka dots on the inside on them. this pimple dangles down to his balls. they make his balls smell like dirty spider webs. that are like the rainbow :) and when you run into a wall you turn into a ninja but can change to the colors of its soroundings and when you hit some one they turn pink and puff away into a booby. and if some one happens to take you to the hospital just say, a panda bit my nose off. and then give them the evil hamster in your pocket and say its a gift from budah, and then on your way home be sure to ride your elephant to Target for a box of tampons so you can give his boyfriend a dirty qujuan and then run off to your mexican lover in japan.to save him frooooooom godzilla!!!!!!!!!!