I bring my naughiest slaves to my dungeon of pain & place them in hardcore breast torture device. When my slaves get too naughty I bind their boobs in leather & watch them squirm. I save my nipple clamp of pain for my extra naughty slaves. Whether I discipline them by hand or by machine, torturing their melons is my favorite thing to do. I even love to just grasp one nipple in each hand & twist & tweak those nips as if I were unscrewing jar... only I squeeze real hard at same time. I love to listen... they invariably squeal or scream in pain.