This mistress was angered by how her slave had messed up. She had given him an assignment where she had told him she did not have much room for error but he had messed up. She tied him up and she took a shit on him to punish him and then she spent the rest of the time cleaning up his mess and doing what he should have done in the first place.
This mistress was shocked when this loser begged her to shit on him. He has a shit fetish and he loves to eat shit especially from hot women. She loves to look at their pussies and their butts as well as smelling them. The mistress was surprised but since she is an adventurous person, she did it. It actually turned out to be a lot of fun for her and she planned to do it again.
This mistress likes morally upright slaves. When she realized that her slave was not an upright individual, she had to punish him in an effort to change him. There were no two ways about it. He had to change and he did after what she did to him. She turned him into her human toilet and she made him eat her shit. She watched as he ate all of it then let him go.
This mistress likes her peace and quiet. She does not bother other people and she does not cross people's lines. She minds her business and she also expects the same from others. If one crosses her line, he or she has him or herself to blame. This guy did and he could not blame anyone else apart from himself. She made him eat her shit as punishment and he learned an important lesson.