Mistress Zephy wanted to scare the hell out of this guy and she did it with her pantyhose. She knew that he needed to learn his lesson and that is why she made sure the pantyhose was smelly before she used it on him. It was humiliating for him but that is what she wanted and she laughed at him as he struggled to beg her for mercy. She ignored him.
Mistress Zephy noticed that her boyfriend had acquired behaviors she did not like and she felt that she had to punish him to make sure he stopped them seeing as her warnings for him to stop were not adhered to. The mistress cruelly used her pantyhose to humiliate him and he wished he had never messed with her. She choked him with the nylon pantyhose and made him regret his choice.
Mistress Zephy knows how to use things to her advantage and that is why she chose to use her pantyhose to turn this guy on. She did not do it to make him have fun but rather to control him and to take advantage of him. And that is something she did very well and she had a great time taking advantage of him for her own benefit when she controlled him.
Mistress Zephy did not like this guy and she had to humiliate and punish him. She had seen him do things she did not like and so she used her sexy pantyhose to tease him and when she gained control over him, she forced him to endure the pain of her ball busting and it was after that that he learned to stay away rom her as he knew what she was capable of.