A savvy eco-designer named Virginia Gardiner has made a toilet out horse poo called the LOOWATT. Not only that, your poo is then collected once a week with neighboring poo and put into a poo digestor. The poo digestor turns the poo pile into poo diesel. You can use the poo diesel to light your home and cook your meals which you can then turn back into poo. This is like a "circle of life" sort of thing.
P.S. Mr. Spanky is secretly thrilled that he can use the word "poo" ten times in this short post.