Not a professor but in my psychology class there was this one girl that would ask questions every three minutes, not the good questions either you know? like the ones where the teacher didn't full on explain things or anything that would make the discussion better just the type of dumb questions where the teacher had literally said what she was asking about two minutes ago.
Anyways, we were viewing a map of cultural stereotypes and in Mexico it said "Maids and Gardeners" (which, okay, fair enough, its just a stereotype) but this girl legit looks at it, looks at the teacher and says: "That doesn't make any sense because Mexicans don't have gardens. How can they have gardeners?"
As a student, I rolled my eyes. As a Mexican, I burst out laughing. jfc, I can't even be mad, I know she's not racist, she's just ignorant as hell.