Some old extreme pictures in which I place very vicious nipple clamps, I insert a large sound in the urethra, I bring in a large steel dildo after some heavy fisting with my whole arm and finally I connect the steel dildo and the steel sound to my electro box for some serious shock treatment.
To play such extreme forms of BDSM it is absolutely necessary to have thorough knowledge of the physical possibilities of the person you are playing with and therefore can't be played with strangers or newcomers to this form of BDSM.