Monster teachers usually teach with a firm hand and use more yelling than necessary and it makes them unpopular with students.Their abrasive personality has been warped by dealing with unruly kids for a quarter of a century. Their wardrobe is usually a few decades behind the times – not to mention their hairdo. Their monster students sometimes use the anonymity of the internet to lash out at them and say hurtful things. Bullying is bad. In both directions.