This slave needed to be punished but since they had slapped him and trampled him and nothing much had changed, they felt it was time to change their strategy to see if anything changed. So the mistresses used their shit to do it as they knew he had never experienced such a punishment and he was ill prepared for it. It was also very degrading and that is why they wanted it.
This guy had a crush on mistress Bianc and he wanted to see and touch her pussy and her ass. So he had to do some quick thinking and he told her he wanted to try scat fetish with her. She had never tried it before and she was curious. So she agreed and took a shit on him and as he ate her shit, he would find a chance to touch and play with her ass and pussy and that is how he fucked her.
Mistress Angela made her husband eat her shit after she had told him it was a fetish she wanted both of them to enjoy. He complained that he did not see how he was to enjoy it when he was the only one eating the shit. So she went ahead and she kissed him while he had shit in his mouth so as to show him that she was not scared of touching or tasting shit.