Mistress Nicole and mistress Isabele wanted this girl to be subservient and so they taught her how to do it. They gave her instructions on how to lick their feet and she licked them well. She was turned on as she watched them make out and hoped to graduate from being made to lick feet to being allowed to make out with them and even possibly have a threesome with them.
Mistress Kira was not pleased with how much this guy lied. She did not care how much he lied to other people but she cared how he lied to her. The mistress concluded that he was a serial liar and he had to be tamed so she used her dirty feet to do it. He was humiliated as he had to lick her feet and do all that she asked him to.
This mistress wanted things to be done her way but her slave did not do things the way she wanted. The mistress had noticed that her slave girl was starting to disobey her and she had to nip that behavior in the bud. She did so using her smelly feet as well as her dirty socks. And she made her take the demeanor and behavior of a puppy as she dominated her.