They're genocidal inmates, most of them, and they're stirring the contents of their own latrines, because if you put poop in a sealed environment, in a tank, pretty much like a stomach, then, pretty much like a stomach, it gives off gas, and you can cook with it.
La majoria són genocides i remenen el contingut de les seves latrines, perquè si poseu caca en un ambient tancat,  en un dipòsit, com passa a l'estómac, llavors, com passa a l'estómac, emet gasos i serveix per cuinar.