Chastity Ruined Orgasm

A slave shouldn't enjoy an orgasm THAT much. I use a Hitachi wand (powerful vibrator) to milk a painful orgasm from my slaves cock while he strains against his chastity cage....the pain increasing the more erect his cock gets closer to orgasm...no matter how painful it gets I'll empty his balls & enjoy him suffering beneath my Goddess ass & pussy...*** then I continue to stimulate his sensitive cock well after climax thus RUINING his ORGASM! ***