Finally managed to shut Eun-Jong up! Told him that he had five chances, and every time I had to say his name, he lost a chance. When it got to five, the WHOLE class would be kept in from lunch for five minutes. He got up to three (seven minutes into class) before the rest of the class lost it and started screaming at him. Attention-seeking little ADHD monkey got the message and put his head down on his desk for most of the rest of the lesson, only perking up to read through the dialogue with the rest of the class, then slumping down again.
I think that that was as close to perfection as class 2-6 will ever get. I actually high-fived my co-teacher afterwards.