where does the phrase going postal come from
Going postal The expression derives from a series of incidents from 1986 onward in which United States Postal Service (USPS) workers shot and killed managers, fellow workers, and members of the police or general public in acts of mass murder. Between 1970 and 1997, more than 40 people were killed by current or former employees in at least 20 incidents of workplace rage.
Star-crossed The phrase was coined in the prologue of Shakespeare's Romeo and Juliet:
Wind the Bobbin Up Iona and Peter Opie traced this rhyme back to Netherlands in the 1890s. When they were collecting games in the 1960s and 1970s the version they encountered was:
When pigs fly The idiom is apparently derived from a centuries-old Scottish proverb, though some other references to pigs flying or pigs with wings are more famous. At least one appears in the works of Lewis Carroll: