Designated punching bag

A lazy way in which Teachers are indulging bullying to maintain "discipline" . A designated punching bag is a student on whom the Teachers are counting to always be the ones bullies will target to pass their "hormonal" energy while leaving teachers favorite students alone. That becomes the "natural order" and routine for teachers. If the Designated punching bag get fed up and fight back...or only wants to save his/her neck, he/she breaks the teacher's routine and natural order therefore HE/SHE is committing an infraction in the eyes of those teachers.