Mistress Kira and mistress Sofi wanted to humiliate this loser and they settled on a painful way to do it. It was painless but it was degrading and humiliating. The girl was required to swallow their saliva and she had a hard time doing it. The mistresses saw to it that she swallowed all of it and that she even smeared it all over her face before they were done with her.
These students wanted to pass their exams but they did not want to put in the work. They wanted their looks to do everything for them but their professor did not do things the way they wanted them done. He was hard on them because he wanted them to work for their grades. So they cornered him and tried to spit on him in order to humiliate and dominate him to change his stand.