I bring my naughiest slaves to my dungeon of pang and place 'em in a hardcore breast castigation device. When my slaves receive too naughty I tie up their milk shakes in leather and watch 'em squirm. I save my nipple clamp of pang for my extra naughty slaves. Whether I bring to heel in 'em by hand or by machine, torturing their milk shakes is my much loved thing to do. I even love to just grip one nipple in each hand and twist and tweak those nips as if I were unscrewing a jar.... solely I squeeze real serious at the same time. I love to listen... they invariably squeal or yell in pain.