Senioritis Definition High School Procrastination T-ShirtMachine wash cold with like colors, dry low heat It's a community service to let everyone know the definition and the symptoms of senioritis. The "Senioritis" definition t shirt is a great gift idea for the brother, sister, cousin, or best friend in high school who is tired of homework, teachers, grades, projects, reading, studying, getting up early, or rules. Also great for a high school teacher, the casual tee is suitable to wear to a football game,