Constant nagging didn't seem to provide any relief from having to clean up the bathroom after each of my three teenage children.
After I cleaned it one day, I resorted to posting a sign that read: "Please leave the bathroom as you found it."
I noticed the bathroom was in the usual mess after my son used it, so I called, "Brian, how did you find the bathroom?"
After a brief pause, he replied, "Straight down the hall, first door on the right."