When your co-worker(s) mysteriously become sick before a holiday. Usually a
lazy worker who doesn't want to
work before a holiday because he or she would rather be home. A worker who makes up a sickness of some sort to cover for his or her
lazy intentions of really not being sick.
Geez, that guy Kinty has really come up with a case of Holidayitis
Q: Where is
Kenny?
A: Isn't he
sick?
He's not
sick, he has a case of Holidayitis