When this guy was asked to drink her, he did not agree. He refused and the mistresses knew that they had to force him to do it. The mistresses came with a funnel and they used it to force him to drink their pee. He regretted why he had refused to drink it as he felt that they would have let her go but were now insisting on it to humiliate him.
Mistress Misia likes useful people but she felt that this guy was not useful to her. So she had no choice but to punish him and teach him a lesson he had never been taught. The mistress threw the guy down and she spat into his mouth before she turned him into a human toilet and she had him drink her urine. He cried as he drank her urine but she did not care.