Urgh, that picture.
I remember one time from my graduate days; I was on my way from the library at my university back to my student office in the Natural Sciences & Mathematics complex. I had to use the restroom, and quick; so I ducked into one of the bathrooms of the Humanities building (which is practically an old stone fortress, looks very dirty compared to the other buildings on campus) and went for the can.
You can imagine my reaction when I saw a hole so very much like that one, with handwritten instructions on the wall as to what time you should be in the stall for ‘service’.
I went to a different bathroom. Still gives me the heaves at how blatant it was.