My kid told me that in his second class in Calculus, that after the midterm test, the old Chinese Professor drew a bell curve on the whiteboard. He proceeded to demonstrate that if one's grade on the test was in the third of the curve to the right that "They were good, saying "I tink you got the idea". Next, he drew another line after the first, representing the middle of the curve. The Professor than said "If you heayah, you got a bunch of wok to do!!!"
For the students represented on the third of the curve on the left, the Professor said ... "If you heayah, you betta wetink ya idea 'bout becomin enginea!" He pointed to a building just across the way labeled "Political Science" and said, "You have 'bout two days to change maaja to sumtin easy!"