Jack Sim, aka "Mr. Toilet," is a crusader for global sanitation. Born in the Singapore slums, Sim knows firsthand the agonies of not having a proper loo. Now he's dedicating his life to a crisis no one dares talk about. Director: Lily Zepeda Writers: Tchavdar Georgiev, Hee-Jae Park | Jack Sim, aka "Mr. Toilet," is a crusader for global sanitation. Born in the Singapore slums, Sim knows firsthand the agonies of not having a proper loo. Now he's dedicating his life to a crisis no one dares talk about.