Princess Serena smiled to herself when this guy tried to please her. He did not know what he had gotten himself into. She teased him and asked him if he was a tough guy and he wanted to prove to her that he was. She lured him till he agreed to have her trample him. She did so with her high heels as well as with her bare feet and he had no choice but to endure it.
Mistress Sandra does not like to talk for nothing. Her slave was ignoring everything she was telling him and it was pissing her off. When she could not take it anymore, she used her boots to show him why he needed to obey her. She trampled him and forced him to endure the pain she inflicted on him. That was when he realized that he had been playing with fire.