Today I'm going to teach painful irony

[yaramaz]

 One of the courses I teach is 1st year business English- mostly concepts and vocabulary/terminology for EFL business admin students. Today's lesson in our course book? Ethics. Listening exercise: BP's External Affairs Manager is interviewed about corporate codes of ethics and why it's important to have them in writing and to adhere to them.  Shall I use crude oil instead of chalk for effect?