A November 15, 1992 piece in the New York Times explored the then recent phenomenon of "grunge" and included a sidebar discussion entitled "Lexicon of Grunge: Breaking the Code," which defined the hip new "grunge speak... Unfortunately for the New York Times , the slang was pure invention.
More of a hoax than a gaffe, but it's the New York Times. It was a gaffe on their part to be so easily burned.
http://instruct1.cit.cornell.edu/cou...c/baffler.html