Doesn’t Know Numbers Or Words

(Our math teacher is on maternity leave and we have a substitute. We’ve had multiple occasions to doubt his skills, but the test he assigns is the last straw. The test consists of four exercises, of which one is marked “optional.”)

Student: “Excuse me, prof, I have a question regarding how you graded the test. Those who did any two exercises and the fourth one got a passing grade, and those who did the first three exercises failed. Why would you do that?”

Teacher: *looks at student as if he never saw a weirder animal* “Isn’t it obvious? The fourth exercise is optional!”

(More students start voicing their opinion, until the teacher has had enough.)

Teacher: “Cut this out! What’s so hard to understand? The exercise is worth four points because it’s more difficult than the others, and I marked it ‘optional’ because you were supposed to solve it!”