For the price of one Euro, you too could be issued with just such a receipt by the nice man who oversees the public toilets at Le Spezia train station en route to Cinque Terre in Italy.
At least the toilets there were spotless and worth the price and novelty of the receipt.
At the best of times I resent pay toilets, but I really draw the line at sub-standard pay toilets such as I encountered after disembarking our cruise on the Seine in Paris. The seat was broken and the flush didn't work. And to think I actually paid for the privilege of using it?
Then there were the sometimes ritzy toilets of Turkey, complete on one occasion with foot washing basins. Bidet apparatus is usually part of the bowl, but, if you are perturbed by the stream of water aimed at your private parts as you sit, there is an adjacent tap to turn the stream on and off. Often there is a choice of sitters or squat toilets within the one ammenity.
Generally the public toilet facilities in Turkey put those in Australia, France, Italy and England to shame. Spotless and plentiful, even at major attractions!