WoWfluenza 

Short for World of Warcraft influenza. An illness similar to a mild version in the flu, caused by an addiction to the Blizzard Entertainment PC game World of Warcraft. It results in further extreme dependence on said game and often confines the victim to his or her computer for many weeks without food or water to spare.

Normal student: Hey Derek, why weren't you in school today?
Derek Miller: I came down with a serious case of WoWfluenza, now I'm dehydrated and can't sleep without playing for at least 15 hours a day

WoWfluenza by Jeremy Campell January 31, 2005

Winfluenza 

The sudden spout of laziness and restlessness you experience before winter break. Causes a change in demeanor and some sort of decline in academic performance. Similar to Senioritis but happens more around the Holiday seasons due to breaks.

Person 1: Did you finish your biology homework?
Person 2: Nah, I don't want to do it. This is the week before break anyway.
Person 1: Yeah, you're right.

Person 1: Dude, we have to write that essay before break.
Person 2: I'll do it later. I've got a case of Winfluenza right now.

Winfluenza by TiredHuman December 12, 2017