Dominating Your Slave through Chastity and Strap-on

I, Mistress Iside, like the effects of chastity. They bring the slave into absolute submission and bring out all of his true nature. Furthermore, the longer chastity lasts, the more the slave goes mad. So today after a long chastity I put him on all fours on the bed while I wear my big black cock and fuck him mercilessly pulling him on the leash like a real bitch. I whip him with my flogger and in the end I fuck him riding on until the bitch cums in the ass. What a slut this slave is!