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.