A flush toilet is a toilet that disposes of human waste by using water to flush it through a drainpipe to another location. Flushing mechanisms are found more often on western toilets (used in the sitting position), but many squat toilets also are made for automated flushing

Ancient civilizations used toilets attached to simple flowing water sewage systems included those of the Indus Valley Civilization, e.g. Harrapa and Mohenjo_daro which are located in present day India and Pakistan and also the Romans and Egyptians. Although a precursor to the modern flush toilet system was designed in 1596 by John Harrington, such systems did not come into widespread use until the late nineteenth century.  

Trivia : It has been determined that a man typically requires only 84 seconds in a public toilet, whilst a woman typically  requires about three minutes.

Perhaps this applies only when peeing. HAHA!.. unless your stomach is aching or your doing something there.