When this mistress noticed that she was dealing with a loser who was full of pride, she had to dominate him and belittle him. She had to put him in his place and she did it with her shit and with her pee. So she had him eat her shit and as he did so, she masturbated with her hands and with a dildo. She had a great time doing it.
Mistress Samantha felt that this slave was not bold and that he needed to be. So she had to do things in a way that they had not been done in a while. That is why she resorted to dominating and humiliating him in a cruel way. The mistress turned him into a shit slave to send a message that he had to be bold or he would always remain a shit slave.