Help!

So, I just got called to teach the 16-17 yr old Sunday School class. The last calling I had was 2 years ago (I'm really good about laying low...) and I taught the SUNBEAMS. Ok, there's a big difference between 16 yr olds and sunbeams...right? Or not so much? :) In any case, I need advice or ideas on how to keep their attention , etc... This class has a reputation for driving teachers crazy with their talking and general lack of attention. I'm not so sure I can threaten them with taking them to their parents like I did in Sunbeams...or can I? So any advice or ideas send em my way!