idiom. Defe-fuckin'-cation, folks.
Related terms: make a no-no.
Real citation: "Yes, it is a bit much for Don Imus to have a sudden attack of Emily Post and start grouching about the political comments chestily flown at Coretta Scott King's funeral service in the presence of President Bush and his lovely wife Rita. Racial enlightment has never been a shining hallmark of the Imus show, from the verbal blackface of their Sambo caricatures of black celebrities to Sid Rosenberg's infamous dig at the Williams sisters to Imus's own use of the 'n' word, which he first denied, then admitted sheepishly, as if he had been caught making a naughty.*"
(James Wolcott, Feb. 8, 2006, http://jameswolcott.com/archives/2006/02/appeasing_the_g.php)
Made-up citation: "I'm planning on getting a puppy, so I'd better prepare myself--mentally and cleaning-product-wise--for the first time he makes a naughty on the carpet."