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