Mistress Harley wanted to test the limits of her slave so she planned to humiliate him to find out. She had him lick her feet which were stinky and dirty. She made sure her feet were as sweaty and stinky as she could manage to make them then she had him make them clean by licking them and swallowing the saliva. She then made him massage her feet when he was done.
Mistress Harley was in a foul mood and she wanted to forget what was bothering her. She called her slave and made him lick her feet which were dirty and which were sweaty as well. She did not care about his wellbeing. She actually started feeling better as the guy licked her feet and did as she instructed. By the time he was done, she was feeling as good as ever.