This mistress had an errant slave and she had to make him learn that she was not the kind of person he could mess with and hope to be forgiven. So she humiliated him cruelly and she did so with her feet. Her feet were smelly but he had to lick them clean. She had made them smelly purposely to dominate him and it worked as she wanted it to.
This mistress noticed that she had an arrogant office assistant and she wanted to cut him down to size. She had to make him stop his arrogance and be as humble as he could be. So the mistress went out of his way to make sure that he licked her feet and that he worshipped them. The mistress did it while she drank coffee which he had prepared for her.
Mistress Zephy found out that her new boyfriend's stroke game was great but his tongue game was weak. She wanted to teach him how to lick and she did it with her sneakers. She knew foot worship would teach him well and that is why she used it to show him how she wanted him to act. He learned even though he preferred to learn on her pussy but she did not want it to be a testing ground.
Mistress Zephy was interested in degrading this guy and she did it with her feet. She used foot worship to make him lick her feet as well as pamper them. But to make sure that it was worth her while, she had to ensure that her feet were smelly before she did it. And that is how the cruel mistress had a great time at the expense of the guy.
Mistress Zephy does not like to date a guy until she has managed to tame him. That is when she believes that she is in a relationship with him. This guy was well toned, had a good job, was strong and handsome. But she wanted to control him more than anything else so she did it slowly and when she felt she had gotten there, she tested him by asking him to lick her heels and her feet. She confirmed it when he did all she asked.