I'm not so sure that 50 Shades merits anything other than the declaration that it's ridiculously far away from most experiences in BDSM.

If you talk about the ssc aspect, it might be a little ummm shocking to your age group.

Personally, I would simply introduce D/s. It's easy to understand and, in my opinion quite relateable to since the non-sexual aspect is simply a throwback to most marriages in the 50's......Sexually, you won't have to get too freaky.....most men and women have tied another to the bed at some point.....

Just my opinion...