Furthermore suppose that the same Ms. Snobby comes back to pick up junior and wants to come in. Suppose you let the kids play quietly by themselves, and are quite proud of how nicely and quietly they've been playing.
Assume that you let Ms. Snobby into the house and together you go to get junior for her. Then suppose they are not in their room, so you call for them. Pretend that their voices are coming from the bathroom down the hall...
Skip to the part where you enter the bathroom, and find the kids sticking maxi pads ALL OVER YOUR BATHROOM WALLS. ("mom, we're wallpapering your bathroom")
How would you feel?