Folk etymologies for the origins of this word state that the word derives from Not Of Normal Criminal Ethos, used to mean an offender whose motivation was different from the purely acquisitive, or possibly Not On Normal Courtyard Exercise, for prisoners that were not to be mixed with the general population for their own safety. As with most cases, these folk etymologies are examples of backronyms and should not be taken seriously. The actual origin of this word is unknown, but it is probable that it is derived from nancy, a derogatory term referring to homosexual males.