|The Pipe is Used in Removal of Night Soil|
Gong farmer (also known as a gongfermor, gongfermour, gong-fayer, gong-fower or gong scourer), was a term that entered use in Tudor England to describe someone who dug out and removed human excrement from privies and cesspits; the word "gong" was used for both a privy and its contents. Gong farmers were only allowed to work at night, hence they were sometimes known as nightmen. The waste they collected, known as night soil, had to be taken outside the city or town boundary or to official dumps for disposal, from where it might be taken to be spread as fertiliser on fields or market gardens.
I have to give credit Joseph Goodman for adding a word to my vocabulary I would never have come across in any other way. Just like my AD&D 1E books made me look up words when I was a young teen new to RPGs, Joseph is making me look up words over 30 years later.
(The Gong Farmers came with their own Night Soil - now that's entertainment!)