A flush toilet is a toilet that disposes of human liquid and solid waste, by using water to flush it through a drainpipe to another location for disposal. The sanitary fixture is distinctly different from a urinal, which is designed to handle only liquid waste. Flushing mechanisms are found more often on sitting-style toilets, but many squat toilets also are made for automated flushing. Modern toilets incorporate an “S”, “U”, “J”, or “P” shaped bend that causes the water in the toilet bowl to collect and act as a seal against sewer gases. Since flush toilets are typically not designed to handle waste on site, their drain pipes must be connected to waste conveyance and waste treatment systems. A flush toilet may be euphemistically called a lavatory, a bog (UK), a pot (US), a loo, a dunny (AU/NZ), a john, a water closet (abbreviated “W.C.”), or simply “toilet”.