A drinking day for black people. Term coined by Conan O'Brien. Unlike Black Drinkin' Day, which is the offical black drinking holiday celebrated on October 7th, Cinco de Negro can be celebrated on any 5th day of the month, making it a recurring celebratory day.
I was pissed cuz I had a rough day at work but then I remembered that it was the 5th so it was Cinco de Negro...me an mah boys had a few that night I can tell you.
by Lord Elsington Halsdingworth October 20, 2009