1 definition by The Metal Storm

KCCO stands for Keep Calm and Chive On, and is a widely used abbreviation on online platforms such as Twitter where #hashtags are used.

The verb 'Chive' means to act sexy, stupid and raucous for the attention of the opposite sex. This can often be seen at workplaces, and so it has recently become a thing for women to take photos of themselves being sexually provocative at work and uploading them to Twitter with the hashtag #KCCO.
"Took a photo of my cleavage outside my boss's office, #KCCO" -Typical caption to a photo uploaded on Twitter by a woman (a.k.a chivette)
by The Metal Storm May 25, 2012
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