For those without access to a simple toilet, poop can be poison. But it’s not just a problem for the poor. Mr. Toilet — a nickname for the businessman turned sanitation superhero, Jack Sim, whose mission is to make sure everyone on the planet has access to clean toilets — says “flies don’t know the difference between a rich man and a poor man, so the rich man is probably eating the shit of the poor man…. Think about it.”