Madame Marissa was supposed to be picked by this loser an hour ago but he was late. She was pissed when he finally came and she taught him a lesson. She never wanted to be late again so she kicked him as hard as she could. She wanted the pain to be a reminder to him that he had to be early whenever he was dealing with her because for her time was money.
Madame Marissa wanted to test her slave's obedience. She asked him to lick the soles of her boots and she made sure they were muddy before she had them licked. The slave was shocked but he did it as he knew it was a trick. If he refused, he might be made to do something even worse so he licked the mud and the good thing is she let him spit it out instead of swallowing it.