The Privacy Act

JJ and Kaylee come running into Audrey's room when the door was shut.
Audrey says through her tears, "THE SIGN SAYS PLEASE KNOCK!"
I say "JJ and Kaylee cannot read."
Jay says, "You, me and mom are the only ones who can read the sign."
Audrey says, "All I want is for people to knock."
Jay says, "Why do you need the door closed anyway? We don't need closed doors in our house."
Audrey says, "I just want it to be quiet."
Jay, completely dumbfounded, pauses for a minute and then says, "Oh, well that's a good reason." and closes the door.