This guy did not satisfy this mistress as he had a small dick. Besides the small dick, he did not have licking skills which would have more than made up for his small dick. So he was hopeless sexually and so the mistress felt that she had to make him do things he had never done before so that he would be incentivized to change and learn to be a good lover.
Mistress Sarah and her friend hated the fact that he had tried to play them by pitting them against each other. They had to teach him a lesson and it was a cruel one. He was made to drink their spit as well as their saliva. It was degrading but he could not do anything about it. His pleas for mercy and forgiveness were ignored and the poor guy was taught a cruel lesson.
When this mistress realized that her slaves were not cooperating with each other, she gave them a tongue lashing. She told them she would not tolerate them not working well together. She did not them arguing, competing and fighting all the time. But they did not listen. So she made them stop by puking into a bowl, making them puke into it as well and then having them drink the mixture.
When it comes to humiliation, no one does it better than this Asian mistress. She knows how to be cruel and to torture and to humiliate. She can do all at the same time. What makes her lethal is the fact that she likes to experiment with new ways of punishment. For this loser, she chose to go with puke fetish. She had him drink her puke and enjoyed as he did.