All my life I’ve known the phrase little green men as a jocular description of extraterrestrials, but I never thought about where it came from; now Dave Wilton of Wordorigins.org has done a Big List post about its fascinating history:
Before there were grays, reptilians, and other species of extraterrestrial beings that have visited earth in science fiction tales and in hallucinations, there were little green men. The phrase appears at the close of the nineteenth century but has its origins in older folklore about little people, a term for elves, fairies, and other mythical beings. […]
The phrase little people begins to be applied to fairies and the like in the eighteenth century. For instance, there is this published in the Delphick Oracle of 2 October 1719, although the little people here are humans of small stature whom the writer believes to be the origin of beliefs in fairies […] Poet George Waldron uses both little people and little men to denote the fairies believed by the locals to live on the Isle of Man. From his Description of the Isle of Man, written in 1726 and published posthumously in 1731 […] By the mid eighteenth century, such little people begin to be described as being clothed in green, and the phrase little green man starts to make its appearance. […]
The little green people move from being earthly spirits to extraterrestrial beings at the close of the century. Charles Battell Loomis’s children’s story the Green Boy from Harrah tells of the adventures an earth boy named Sandy has with an extraterrestrial visitor, printed in the Atlanta Constitution of 8 October 1899 […] And we get the phrase little green men used in reference to ETs in the Sunday Oregonian of 29 July 1906 […] Two years later, Ohio’s Columbus Evening Dispatch of 31 March 1908 printed this joke that shows that the phrase little green man had become widely understood as a reference to extraterrestrial beings:
The Martians were prepared to catch the first message from the earth.
“Let me see,” exclaimed the first little green man, “I wonder if the first communication will be a flash, a tick or a knock.”
“A knock, very likely,” laughed the second little green man. “You know the earth is just full of knockers.”
Which shows how wise the Martians really are.
Who knows what was denoted by “knockers” here? Green’s has a plethora of slang senses, and if you’re thinking about ‘boobs,’ that isn’t attested until considerably later (and would have been an unlikely referent in a 1908 newspaper anyway). At any rate, click through for more, including the quotations, which I have elided.
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