Kelly day
n.— «Also, anyone paying 15 percent of their health insurance will get an additional “Kelly Day,” the term for an extra day off a firefighter has the option to take or work for time and a half.» —“Firefighters OK contract with city” by James V. Franco The Record (Troy, New York) July 31, 2007. (source: Double-Tongued Dictionary)
Further reading
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A stereotype is a preconceived notion about a person or group. Originally, though, the word stereotype referred to a printing device used to produce lots of identical copies. • The link between tiny mythical creatures called trolls and modern-day...