Question of a Universal Nature

In the Universe the're some very interesting questions to be answered. Take for example, the folowing habit of human beings which is interesting but troubeling as well. It all starts when humans decide it is time to gather and listen to music and drink an occaisonal beer. In modern times the beer will be sold from plastic tingies and when there is need to go to the loo men will have to go to these things - but they will not be as brightly coloured as on the picture.
Things get strange almost immeadiately, and happen everywhere. People, not necessarely men, trow or put things ín the place where is supposted to piss in. Things will look as messy as this 'pisbak' looks like, and with a good eye for details you can recognize a Heiniken can. The question is as follows: why do people litter those pisbakken? And happens that before or after somebody visits one? Most plastic bekkertjes contain - the result of time and a few men - a lot of piss which nobody wants to clean. But that mess makes sure that when somebody uses a pisbak his clothing will be hit by flying driplets of piss rejected by the plastic bekertjes. So the pisbak will lose its function and men head back to the bushes, or at least after such events happens, where nobody wants them.
So why put a bekkertje in a pisbak and piss your own pants under? Or happens the littering after men have done the activity they wanted to do - that is just discusting! Or is there a secret conspiracy by women who don't like they have to stand in de queue for so long when they have to piss? That just may be the case.