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3.
A day when you go to work sick because you can't afford not to or because no one else can cover for you.
Ugh, I feel like hell.

You should stay home.

Can't afford it. Looks like I'll be working a Sick Day tommorrow.
by flashwildecard December 17, 2012
 
1.
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 night rock 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.
"Where is catherine today?"
"I saw her making out with some douche bag Lastnight maybe she took a sick day to get laid"
by Waggon April 09, 2007
 
2.
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.
I gotta take my "sick day" next week.
by Max Smith November 07, 2003
 
4.
An excuse to head to the beach and surf.
Damn, I'm supposed to head to work today and the surf is prime. I better call into work and take a sick day.
by Jerseyjames December 09, 2012
 
5.
"The format: three young lads are put in a house for two months trying to catch as many diseases as possible. The producers want them to be infected by nits, lice, flu, sexually-transmitted diseases and warts, rather than things like Aids and cancer which aren't quite as much fun. A doctor will be on hand to ensure they don't get too ill."
-From thecustard.tv
by Triumph the Insult Comic Dog November 13, 2003