Lisa has just gotten home from a hard day and her shoes are very dirty, plus her feet are very sweaty. Luckily, she has a slave to clean them for her. She gets him down on the floor and makes him lick every single speck of dirt from her shoes. Once he's done with that, she makes him lick the sweat from her nylons and swallow every last drop down.
Mistress Natasha came home to find her slave lazing around. She did not speak to him. She wanted actions to speak louder than words. She made him lick her boots and swallow the saliva. She found him without work and now she was giving him work. She warned him against trying to complain because it would lead to automatic dismissal. The slave did as he was told by the mistress.