While being flirty with my boyfriend over text, I call in my sissy slave. She is wearing a black dress and locked neatly in a chastity cage. I inform the sissy that she will be assisting me in pleasure while I touch myself to my boyfriend's hot pics. The sissy's task is to silently suck on my nipple. While sucking, I fully intend to humiliate and degrade her with reminders that she will never be able to make me moan like my boyfriend does. Her function is my life is simply to serve and be denied. Just one of my boobs is big enough to completely cover the locked sissy's entire head. The privilege of sucking my boob is the closest she will get to anything sexual with an alpha Goddess like me. As I continue sexting my boyfriend and touching myself, my pussy gets so wet and I get too horny to just stay still any longer. I order the slave to lie on his back.