Acronym it. This has become such a problem that it is even evaluated at the level of medical academies such as the American Academy of Dermatology. Acronyms are often taught as mnemonic devices, for example in physics the colors of the visible spectrum are said to be "ROY G. BIV" ("red-orange-yellow-green-blue-indigo-violet"). They are also used as mental checklists, for example in aviation: "GUMPS", which is "Gas-Undercarriage-Mixture-Propeller-Seatbelts". Other examples of mnemonic acronyms are "CAN SLIM", and "PAVPANIC" as well as "PEMDAS". It is not uncommon for acronyms to be cited in a kind of false etymology, called a "folk etymology", for a
Newlyn riots of whom practised a ban on fish being landed on the Sabbath. The non-Cornish fishing crews, largely from Lowestoft and northern English ports, did not hold the same opinions about Sabbath observation, and would frequently land fish on a Sunday attracting higher prices for their fish than those sold on a weekday. The riots began in the early morning of Monday 18 May when a group of up to 40 Newlyn fishermen, supported by a mob of around 1,000 others, boarded the boats of "East" (of Cornwall) fishermen moored in Newlyn Harbour and destroyed their catches. By mid-morning some 16