This guy had been given some work to do but he was not a performer so he did a poor job of it. This angered goddess Tempest who had to make sure he lived up to what he had claimed he would do. So she forced him to eat her shit by turning him into a human toilet. He learned his lesson the hard way and the shitting was a wake up call.
Goddess Tempest wanted to test her slave and she did it in an extreme manner. She asked this guy to eat her shit and drink her pee and after thinking about it, the guy did it. He was smart and saw that it was a test. He passed the test and the mistress gave him a lucrative contrast as he was a risk taker and he knew how to read situations.