This mistress felt bad that this slave who she had tried to help was misusing her stuff. She had to show him what she does to people like him and she made sure it was painful and humiliating as well as degrading. The mistress took a shit on the slave and she forced him to eat her poo as well as drink her urine. He never misused her stuff again.
This mistress wanted to express her anger on what this guy had done. She did not want to let anyone mess with her and this guy had to learn his lesson the hard way. She used her poo to do it and the guy was fed with her poo. He regretted messing with her and tried to beg for mercy but she told him that the ship had sailed and he had to get his punishment.