A while back it stated in the Building Regulations that new-build houses had to had at least two doors between the kitchen and the toilet for hygiene reasons. In the new version it states that there is only a need for one door to separate the kitchen from the bog now, which just goes to show that the original ruling was a load of crap!
Maybe in the near future fitted kitchens will come with a unit like this. . . .
Problem. How do you flush it? Chuck a bucket of water into it? Is that black knob something to do with it?