From moon + bat, first used in the 1940s by the science-fiction writer Robert Heinlein, then used in the term "barking moonbat" coined in 1999 by Perry de Havilland of “The Libertarian Samizdata”, a right-libertarian weblog. This originally referred to both left-wing and right-wing crazy people. Sometimes wrongly claimed to be a corruption of Monbiot (from George Monbiot, British environmentalist and Guardian columnist).
moonbat (plural moonbats)
- (pejorative) A liberal (someone with a left-wing ideology).
2006 May 11, Boehlert, Eric, Lapdogs: How the Press Lay Down for the Bush White House, New York: Free Press, ISBN 9780743299169, page 216:
- As nervous Bush supporters watched the president's approval rating slide, they unleashed their wrath on Sheehan, labeling the mourning mom a “crazy,” “anti-Semite,” “left-wing moonbat,” “crackpot” whose behavior bordered on “treasonous” and who was nothing more than a “hysterical noncombatant.”
- For more examples of usage of this term, see Citations:moonbat.