Lady Naomi need to humiliate this guy and she did it both for fun and to send a message to him. It was a message he was ill prepared for and it turned out to be super fun for her. He did not like it but it was not up to him to like it. She had decided and that was all there was to it and he had to follow it all.
Lady Naomi had time on her hands and she needed something to do to kill time. So she used her gorgeous ass to tease this loser and get him to do what she instructed him to do. When he was turned on, she got him to lick her ass and also to worship it according to her instructions. And he was like putty in her hands and he did everything she asked him to.