When someone is addicted to the job they do so much they they stop eating and sleeping fully/ taking care of themselves because all they want to do if make money.
Just bring up a subject , if you have a class with them then it should be easy so ask them to help you with a question or if there is any homework
A “thwop” is supposedly the sound when you serve mashed potatoes, like when you throw it off your spoon. So, you can word it as a serving of mashed potatoes or the sound of serving mashed potatoes.