Mistress Karla wanted to dominate her slave to pass time as she had watched all the movies she could find and had nothing else interesting to watch. The mistress summoned her slave and she forced him to lick her boots especially the sole. When he was done, he was about to walk away when she called him back and had him lick her socks as well. They were smelly but he had to do it.
Mistress Gaia wanted a human toy to play with and she turned her slave into one. The mistress wanted him to lick her feet, sniff her stinky socks, lick her pussy and her ass, endure trampling and ass sitting and he did all of that as she did not give him an option. He had never been as humiliated as he was today by the mistress. But he endured it all.
This mistress had a new slave and she wanted to instruct him and to find out how well he took instructions. So she asked him to lick her stinky socks. She was also checking for his obedience. She then gave him instructions on how she wanted her socks licked and she was glad he did everything her way so she did not need to torture or punish him any further.