Mistress Zephy wanted to try something new and she chose to try foot domination. So she looked for a loser who she found easier to deal with. The mistress enjoyed scaring him into doing what she wanted and that is how he licked her feet and he sucked her toes which were both smelly as well as sweaty. He did not want to be tortured so he complied with her orders.
Felicia has been on her feet all day long and it's been incredibly hot out. They've been sweating in her shoes and she can smell them without taking them off. That means that it's her slave's job to clean them up for her so she doesn't have to deal with the stink. She orders him onto his knees to slip off her shoe before gently licking her socks and sucking her toes clean.
Two femdoms have spent all day shopping and spending someone else's money when it's finally time to head home with their dirty shoes covering their sweaty feet. They order their slave onto the floor and tell him that's it's his job to make sure their shoes are nice and clean so they can go back out shopping tomorrow. They sit in the kitchen and make him lick every inch of them clean and swallow the dirt.
Mistress Gaia likes to use her feet to punish and humiliate especially when she is not into punishments at that time or when she is bored. She was seated on her throne and she punished her slave because she did not have anything better to do. She just wanted to pass time. So she made him lick her sexy feet, suck her toes, lick and smell her shoes as well.
Lea likes to trample with her sneakers. That way, the slave being punished feels all the pain she wants him to feel