An integrated teasing device:

Your vagina has been modified to include an inner and an outer vaginal wall separated with a very thin gel substance between them. Much of the wasted electrical energy from your body is now stored in a series of tiny capacitors in your clitoris. These will activate repeatedly as they become fully charged and discharge by vibrating from inside your clit. They will lose their charge the instant the inner wall of your vagina is compressed against the outer wall, such as when you insert anything inside yourself no matter the size. Even a tiny clench is enough to make contact. Inside you, the tiny wires that make this possible will dump the charge back into the capacitors so they can again begin the process right away. When contact is made by clenching or insertion that area will be numbed by the flow of small amounts of electric current and all stimulation attempts beyond the capacitors will not be felt. Furthermore due to the effect it has on the surrounding nerves clitoral or vaginal orgasms will now be impossible. Stimulation of the area will cause your body to devote more energy there and this effect will cause the charge/discharge cycle to become more and more rapid and intense over time. As your vaginal muscles become toned the system will become more effective, and eventually you will be riding the perpetual edge.