It's been a long time since I have my "teacher" / "lecturer" sit at the back of the classroom and "watch" me teach.... LOL... really tension... but that is also a time where all my students will really behave and answer whatever being ask voluntarily... haha... they will help me "their teacher" to "please" my teacher... hahaha...
And once a teacher forever a teacher... even when I have not been teaching for a few years now... I still get my ex-students calling me teacher...