Common during the 3rd quarter winter months. Students thirst for the relief of summer break due to the lack of homework and responsibilities. Summer is a common time for summer love and general hook ups. Side effects of Summeritis: dropping grades, laziness, apathy, bitch fights, mood swings, break ups, really bad winter dances, and a really long winter.
Johnny's severe case of summeritis led him to fail his math class and ironically end up in summer school.