Most of my CBT instructions require me to trust you to apply my style of sensual sadism at home. Today's assignment makes sure that you will. I'm going to guide you through the devilish device known as the Zipper, a series of clothespins that are applied to your tender areas and then removed in a specific way. I'll give you accompanying masturbation instructions and we'll see if you can manage an orgasm by the end. Fair warning.. this is not for the CBT novice.