As long as we're on the subject I found some interesting (selected) information about toilets from wikipedia:
1) Ancient civilizations used toilets attached to simple flowing water sewage systems included those of the Indus Valley Civilization, e.g., Harappa[1] and Mohenjo-daro[2] which are located in present day India and Pakistan[3] and also the Romans and Egyptians.[4] Although a precursor to the modern flush toilet system was designed in 1596 by John Harington,[5] such systems did not come into widespread use until the late nineteenth century.
2) The third millennium BC was the "Age of Cleanliness." Toilets and sewers were invented in several parts of the world, and Mohenjo-Daro circa 2800 BC had some of the most advanced, with lavatories built into the outer walls of houses. These were primitive "Western-style" toilets made from bricks with wooden seats on top. They had vertical chutes, through which waste fell into street drains or cesspits.
3) In 1596, Sir John Harington (1561–1612) published A New Discourse of a Stale Subject, called the Metamorphosis of Ajax, describing a forerunner to the modern flush toilet installed at his house at Kelston.[18] The design had a flush valve to let water out of the tank, and a wash-down design to empty the bowl. He installed one for his godmother Queen Elizabeth I at Richmond Palace, although she refused to use it because it made too much noise.
4) The perception that human waste had value as fertilizer, and in ammonia production, delayed the construction of a modern sewer system as a replacement for the city's cesspool system. In the early 19th century, public officials and public hygiene experts studied and debated the matter at length, for several decades. The construction of an underground network of pipes to carry away solid and liquid waste was only begun in the mid 19th-century, gradually replacing the cesspool system, although cesspools were still in use in some parts of Paris into the 20th century.[17] The growth of indoor plumbing, toilets and bathtubs with running water came at the same time.
5) It has often been claimed in popular culture that the slang term for human bodily waste, "crap", originated with Sir Thomas Crapper because of his association with lavatories. The most common version of this story is that American servicemen stationed in England during World War I saw his name on cisterns and used it as army slang, i.e. "I'm going to the crapper".[10] The word crap is actually of Middle English origin; and predates its application to bodily waste. Its most likely etymological origin is a combination of two older words, the Dutch krappen: to pluck off, cut off, or separate; and the Old French crappe: siftings, waste or rejected matter (from the medieval Latin crappa, chaff).[10] In English, it was used to refer to chaff, and also to weeds, or other rubbish. Its first application to bodily waste, according to the Oxford English Dictionary, appeared in 1846 under a reference to a crapping ken, or a privy, where ken means a house.[10]