What would you say to a stepchild who just said, “You are not my dad. I do not have to do what you say.”?
Part two of the response turns the corner and deals with the behavioral issue of the moment. “You’re right. I’m not your dad but I am the adult here right now and you still have to clean your room. Besides, if your mom were here she’d be asking you to clean your room, too. So it’s your call. You can clean it yourself or we’ll use your allowance and pay your sister to do it for you.” Then turn and walk away. You know, kids need understanding and compassion. They also need to clean their room.