THE MIRROR TRICK
First of all, in addition to other interests in bondage and chastity, I am fascinated with finding ways to force a guy to stay on the edge of orgasm for long periods of time, before pulling the string on him and not letting him get off. All the better if this means he gets locked back into a chastity device.
This is challenging, because how do you know if he really is "on the edge"?
[This is another set of posts from the now defunct ntcweb.com]