"Fuck" observes that the original use of the word is unknown to scholars, noting that its earliest written appearance was in the 1475 poem "Flen flyys". It was not, as is often claimed, originally an acronym for "For Unlawful Carnal Knowledge" or "Fornication Under Consent of the King". The word has been used by authors including Robert Burns, D. H. Lawrence (in his 1928 "Lady Chatterley's Lover") and James Joyce. The film explains that "fuck" established its current usage during the First and Second World Wars, and was used by General George S. Patton in a speech to his forces who were about to enter France.