High School-itis 

A more severe form of senioritis. The symptoms are quite similar, if not identical to that of senioritis, but instead of affecting someone in their senior year, it affects them throughout their entire time in high school. Lack of finished assignments, not having a backpack, sleeping in class, forgetting to shave, and sarcastic yet humourous comments are common. Afflicted will either be unmotivated but quite intelligent, and manage to pull passing grades out of thin air, or just dont care and end up dropping out.

Man I gots the High School-itis, i never do anything

High School-itis by gimme_some_fucking_coffee August 5, 2012

highschoolitis 

acute and painful inflammation caused by irritating behavior by ones classmates particularly in high school.

Man, my friends today gave me highschoolitis pretty bad....

highschoolitis by Word10101 September 14, 2013