Recently I passed through Dharavi...oops! sorry, I meant Schiphol Airport in Amsterdam. Contrary to what you may have heard, it's a perfectly modern and sparkling airport, with one difference, from all others. Every urinal has an image of a fly etched into it, near the outlet. All nit-pickers will now want to know whether I went and checked all of them. Well, no, but I did actually check a few, (hopefully when nobody was looking) and indeed they all had it.
Of course, as it turned out, this is not new. The net, as I have found with many other things, even has pictures of these. (Did you check out the site name?) The idea being, in case you haven't guessed it, that it psychologically works to improve the, er, aim. (Or simply put - if a man sees a fly, he aims at it). Authorities at Schiphol claim that the flies etched on the urinals "saves us a lot of money on cleaning" and reduces "spillage" by 80%. I would take the percentages with a grain of salt, but there you have it.
As one of my colleagues recently reminded me, in college we used to have signs which said, "We aim to please, You aim, too". This is merely the graphical version of this admonition.