A literal teacher said how it is, and you had to come in and tell him how wrong he is about his own day. You obviously knew what he meant, despite there being plenty of work to be done in the time he is referring. It is no different than a million other jobs, all adding value to our society...but for some reason we have to freak out at the slightest point that may paint teachers as anything other than underpaid never-ending hero workers.