flying toilet
n.— «Its lead author, Kevin Watkins, recalls a visit to Kibera, a Nairobi slum where people defecate into plastic bags, which they toss onto dumps or by the road. These “flying toilets”, as they are called, often land on fractured water-pipes. When the pressure drops, the pipes suck in the matter piled on top.» —“Clean water is a right” Financial Express (India) Nov. 15, 2006. (source: Double-Tongued Dictionary)