Thats funny, and sad that some people believe this...

Some of the well-known uses of Dihydrogen Monoxide are:

• as an industrial solvent and coolant,
• in nuclear power plants,
• by the U.S. Navy in the propulsion systems of some older vessels,
• by elite athletes to improve performance,
• in the production of Styrofoam,
• in biological and chemical weapons manufacture,
• in the development of genetically engineering crops and animals,
• as a spray-on fire suppressant and retardant,
• in so-called "family planning" or "reproductive health" clinics,
• as a major ingredient in many home-brewed bombs,
• as a byproduct of hydrocarbon combustion in furnaces and air conditioning compressor operation,
• in cult rituals,
• by the Church of Scientology on their members and their members' families (although surprisingly, many members recently have contacted DHMO.org to vehemently deny such use),
• by both the KKK and the NAACP during rallies and marches,
• by members of Congress who are under investigation for financial corruption and inappropriate IM behavior,
• by  kids who play Beyblades,
• by the clientele at a number of bath houses in New York City and San Francisco,
• historically, in Hitler's death camps in Nazi Germany, and in prisons in Turkey, Serbia, Croatia, Libya, Iraq and Iran,
• in World War II prison camps in Japan, and in prisons in China, for various forms of torture,
• during many recent religious and ethnic wars in the Middle East,
• by many terrorist organizations including al Qaeda,
• in community swimming pools to maintain chemical balance,
• in day care centers, purportedly for sanitary purposes,
• by software engineers, including those producing DICOM software and other DICOM software tools,
• by popular computer science professors,
• by the semi-divine King Bhumibol of Thailand and his many devoted young working girls in Bangkok,
• by the British Chiropractic Association and the purveyors of the bogus treatments that the BCA promotes,
• by commodities giant Trafigura in their well-publicized and widely-known toxic-waste dumping activities in Ivory Coast,
• in animal research laboratories, and
• in pesticide production and distribution.