Being a Teacher

Being a teacher is like being a waiter at a restaurant where the customers keep coming back for forty-five minutes every week day even though they hate the food and the service. Finally, after about nine months of complaining they stop coming to the restaurant. After a couple of months the customers come back to the restaurant and they get a new waiter. In the meantime, the original waiter gets a whole new set of customers who also hate the food and the service and the entire process continues on for many years.