1859, British slang, "lark, spree, rough enjoyment," of uncertain origin. Later also "a fixed prize-fight."
[1980s+ college students; second sense fr the name of a character in the TV show The Flintstones]
In Commonwealth hackish, "barney" is to fred as bar is to foo. That is, people who commonly use "fred" as their first metasyntactic variable will often use "barney" second. The reference is, of course, to Fred Flintstone and Barney Rubble in the Flintstones cartoons.
[Jargon File]
(1994-11-28)