What is the dumbest thing you’ve ever heard a teacher say?

Story time: In primary school, we had the theme “Africa.” We had to basically say what we knew about Africa. There were your usual “Africa is poor, bad water, no food, no medicine etc.” I, the smart kid as I was, dared to compare Cape Town to the rest of poor africa. (I need to admit I was a smart ass)

Anyway, my teacher was super offended and aggressively told me, “Is that entire africa?!?!” as if all other poor countries were entire Africa.