Madame Ellen had a horny slave and she did not like how he acted. She did not even need to know that he was horny but he went ahead to show it to her and that pissed her off as it did not look like he respected her. So she teased him with her ass and as he enjoyed it, she turned on him and she had him lick her boots and endure trampling.
Madame Ellen was angered by the poor work that her slave had been doing. He was doing it as if he was forced and she did not like it. It had to be redone and she felt that she had to do something else to send a message to him. That is why she forced him to lick the soles of her boots before she let him go. He never did such shoddy work again.