Off the Clock
Have you ever run into your boss on the train on your commute home? They’ll strike up a conversation with you and all you’ll want to say is “leave me alone, I’m off the clock”. Well, this teacher makes his students well aware of when he’s available and when he is not.
You may have experienced running into your teachers outside of school in the past. They’re usually friendly as always. However, this teacher is a stern believer that he has to be paid to talk to his pupils. If you see him outside of school, he’ll just pretend he doesn’t know you.