Mistress Cassy has the best method to make chastity sissy slaves cum. First, she keeps them locked up for a few months, expertly teasing them along the way. Once their balls are full, tender and ready to explode, she releases them from chastity. This time, Mistress Cassy makes the slave try to fuck the legs of a mannequin while only having 30 seconds to do so. If the slave can’t cum in 30 seconds, it must wait until Mistress allows another chance to cum. Cassy torments her slave like this until he is extremely horny and hopelessly aroused. In the end, she lets the slave jerk off in front of a mirror, having 1 full minute to cum. Just as the slave reaches the point of no return, the 1 minute is over and his orgasm is ruined. Then Mistress makes the slave lick up all the cum dripping down from the mirror.