A sensual, seductive, but very sadistic scene. A sub has requested I train him to fulfill his deepest lifelong fantasy of significantly increasing his ball pain tolerance. I have him sign a release form; in case the session goes too far. I think “this will be a lot of fun; at least for me!” I bind him, spread eagle and helpless to the bed and commence seductively teasing him. The session proceeds with increasingly painful ball busting, as my victim cries out in pain and struggles helplessly against his bonds. When the ball pain is almost unbearable, I spring a terrifying surprise on him. II will castrate him by crushing his balls in my hands. I have him beg me to do it, it's what he really wanted.