To be KC'd you would have to be a girl of a young age, that is preyed upon by an older boy.
Another way in which you would have been KC'd is when you are about then sexually assaulted, however the rapist has been caught in the act.
One is lying passed out on the floor at a party, the boy chooses you as his target. He then proceeds to pull his trousers down when he is caught by the rest of the party.
You would then have been KC'd.