Mistress Kira had a clueless slave and she did not like it. He had to stop being clueless as it was a liability to her so she asked him to lick her feet and do things her way. He was gagged and choked him for her own enjoyment and he was shocked and humiliated by it all. He learned his lesson the hard way and he never did it again.
When this slave showed signs of dishonesty, mistress Gaia knew that she had to do something about it. She felt that he needed to be punished so that he learned that it did not pay to be dishonest. The cruel mistress went ahead and she foot gagged him to dominate, humiliate and torture him. When she was done with him, she knew he would never be dishonest again as he had learned his lesson the hard way.
Mistress Kelly and mistress Sabrina wanted this guy to do some work for them but it ended up being that he was slow and they were pissed at him. He had to learn to do things quicker than he had done them and for that, he had to be punished. The mistresses punished him using their feet by asking him to lick their feet and thereafter, they gagged him as further punishment.
Mistress Enola did not like how her boyfriend had acted in front of her friends and she had to punish him. She used her feet to gag him and she nearly choked him as she did it. He did not realize how pissed she was until she gagged him and humiliated him. It was humiliating but there was nothing he could do about it and he chose to endure the humiliation so that she could forgive him.