This mistress did not like how her professor was unjust to some students. She wanted fairness from him and when she did not see it from him, she had to punish him. She did it cruelly and forced him to make amends. She used her riding boots to torture him and he had no choice but to accept what she did to him and promise to change for the better.
Madame Pearl could not believe that this loser was from the countryside but he did not know how to ride a bike. She was angry at him because she felt he was pretending. So she trampled him with her riding boots to find out whether he was telling the truth or he was pretending. She stomped on him and she even whipped him painfully. He was telling the truth but he had to learn.
When this guy messed with mistress Gaia, he did not imagine that the punishment would be as cruel as it was. The mistress did not waste time punishing him. She got him to strip naked and she used her boots to trample his cock. It was painful but she did not care. His pain was her pleasure and she was sure he had learned his lesson and would not repeat his mistake.