I bring my naughiest slaves to my cage of pain & place them in hard-core mammary Torment device. When my slaves get too naughty I bind their tits 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, tormentingtheir its 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 in same time. I love to listen... they invariably squeal or scream in pain.