Ninja fucked 

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.

She got ninja fucked, dude. Right after they both got off, he was gone like a goddamn shadow.

Ninja fucked by Andrew Flanagan March 4, 2006

Ninja Fucked 

Meaning to rape.

I ninja fucked that bitch last night thanks to some pills I slipped in her drink.

Ninja Fucked by Ninjaassfucked February 18, 2019