Over at Ernie's 3D Pancakes (linked from title) resides some college weed-out course humor (at the expense of premed students). I remember, along with other engineering undergrads, torturing the premeds in physics class. Anyway, this reminded me of a story by a doctor friend of mine. The setting is a first-year med school class (I forget the subject). Professor is dealing with a clueless med student: "Here's a quarter. Call your mother. Tell her you're not going to be a doctor."
Compared to that, the weeder-course humor seems kind and gentle, doesn't it?