A euphemism for calling in sick to work so that one may stay at home and fist his or her significant other throughout normal business hours.
This does not require the employee to actually be ill. Instead, a California Sick Day is defined by the act of business-hours fisting, regardless of the health of the participants.
Employee 1: You missed the big meeting yesterday.
Employee 2: Indeed. I took a California Sick Day.
Employee 1: Up to your elbows in shit either way, right?
Often a baldfaced lie used to sueak out a couple of extra paid days off; employed to extend a long weekend, travel to an out-of-state Wednesday nightrock concert, stay in bed all day with a new romantic interest, etc. Most people would rather come to work sick and risk infecting their colleagues than give up an illicitly obtained and healthy day of fun.
When a person working at an office takes a day of becuase he/she is qoute unqoute "sick". Usually they participate in an activity that is no where near their daily work related tasks.
Condition that occurs starting at midnight the day a new video game is released consisting of fake flu or cold like symptoms reported to your boss, teachers, or parents. Popular games such as the Call of Duty, Halo, and many sports game series, have multi-player online gaming and every second matters to international rankings. It is very common for any gamer to get "sick" to take off school or work when a new popular game is released.
Slack day comes every April 27th. It is a day in which managers get to sit on their asses all day with no repercussions from ownership. Manager typically gets his jollys as he watches his work get done by someone being paid half as much,also see philing it