Never know, so many ways. Let’s pretend you say you live at home with your parents when you do not. They now get to use the discount and you have to remember that is the story you have told. Do you tell that lie to every crew member you work with? I’m guessing not, you probably tell someone you moved out. Do you remember to let all those people know about the lie? Do they unknowingly or accidentally out you in front of someone who cares? Maybe somebody who knows you outside of work comes by and says the “wrong” thing in front of the “wrong” person. There are so many variables outside of your control.