raping someone without them knowing it. has to be done in three steps.
1. scream (known as ninja approach)
3. leave note
it's nice to let people know they have been raped, it's the polite thing to do. that's why we leave a note.
Can't remember being ninja raped, but this note totally says I did...
Sitting in a dark corner, waiting for your target to let their guard down, and then raping them.
Usually done in a BLUUAAARRGH fashion.
Dude 1: I raped yo mom last night, I used the ninja approach.
Gaby: Did you at least scream really loud while doing it?
Dude 1: Totally man.
Gaby: Fine then.