> dihydrogen monoxide
The dihydrogen monoxide parody is a parody that involves calling water by an unfamiliar chemical name, usually "dihydrogen monoxide" (DHMO)
In 1983 on April Fools' Day, an edition of the Durand Express, a weekly newspaper in Durand, Michigan, reported that "dihydrogen oxide" had been found in the city's water pipes, and warned that it was fatal if inhaled, and could produce blistering vapors.[1] The first appearance of the parody on the Internet was attributed to the "Coalition to Ban Dihydrogen Monoxide",[2][3] a parody organization at the University of California, Santa Cruz following on-campus postings and newsgroup discussions in 1990.
https://en.wikipedia.org/wiki/Dihydrogen_monoxide_parody