Question: Where does the phrase "the skinny" really come from? from - http://www.etymonline.com/index.php:\n\nskinny (adj.)  \n1573, "resembling skin," from skin (n.). Meaning "emaciated" is recorded from 1605. In the sense of "the truth" it is World War II military slang, perhaps from the notion of the "naked" truth. Skinny-dip first recorded 1950s.

Answer: isn't it just an extension of the noun skin?
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