Lady Shelly wanted to dominate this guy because he was not her type and he was being a bother to her by trying to hit on her all the time. So she chose to dominate him with her rubber boots and she forced him to lick the dirty soles. When he was done, she trampled him and laughed at him when he tried to beg her to stop. She did not.
Lady Shelly felt like dominating this loser and scaring this loser. She did not need any further reason to do it. The mistress did it with her boots and she loved the reaction she got from him. He was scared shitless and he cried while begging her to stop what she was doing to him. But she did not and instead went on to trample him as well as make him lick her boots.
Mistress Alice was not pleased with what she had seen from this employee so it was time to show him that she was not the sort of person to be pissed and then keep quiet as if nothing had happened. The mistress used her rubber boots to trample him and she also choked him with the same boots. That was when he realized who she really was and he adjusted accordingly.
Lady Absinthia used her boots to crush and humiliate her slave. He had not been straightforward with her and she did not want that t o happen again. So she forced him to change. She had him lick her boots as well as her socks and her bare feet. She told him if he did not follow her instructions, she would crush him with the boots. The slave was afraid and did what she wanted.
Lady Kitty has a thing for her boots. She loves them because they are a fashion statement and she also likes them because she can use them to punish a slave if and when she wants. Today she eve had a whip and she used it to whip her slave and make him do what she wanted, which was to have her knee high boots and her sweaty feet licked.