I can't believe I'm going here, but...In Europe, toilets are a wee* bit different. There are so-called "shelf-toilets" that use much less water. Basically, solid waste falls onto a shelf with a hole below (in a canyon type arrangement, perhaps). That way, the entire toilet bowl is not filling with water, thus saving the new "oil," as some call it.
Herein lies the problem, though: to those unaccustomed to "shelf" toilets, it can be a daunting experience to have one's...well, leavings so up close and personal. It's a great relief and the end of a sick fascination to flush away the contents of the shelf. With less water flow, however, it's not always such a clean "getaway," and often a handy-dandy toilet brush is conveniently located next to the toilet. Even in public restrooms, this brush is not reserved just for the cleaning person; it's expected that one cleans up after oneself if there is not a clean get away on the shelf.
*hehe, think about it!