With four kids six and under, two of them under two, and one of them potty training, it goes without saying that there's not a lot of bathroom privacy in this house. Looking on the bright side, I'm now almost certain that Quarta really does listen to us:
Quarta [bursting into the bathroom]: "HI!!!!!"
Me: "Uh, Quarta? Can't you see I'm using the bathroom?"
Quarta: "GOOD JOB!!!!!!"