(My brother is a chemistry teacher at a public high school. Due to the popularity of ‘Breaking Bad’, he’s lost track of the number of times he’s had this conversation.)

Student: “Hey, Mr. [Teacher], do you watch Breaking Bad?”

Teacher: “Yes.”

Student: “Do you know how to do that stuff?”

Teacher: “Yes.”

Student: “Can you teach me?”

Teacher: “No.”

(One day he gets tired of it, so he finds a new response.)

Student: “Do you watch Breaking Bad?”

Teacher: “Yes.”

Student: “Could you do that?”

Teacher: “Yeah, but I’d make ecstasy; the profit margin is higher.”