Goddess Kiffa wanted this guy to learn that she was not the sort of person he could piss off and think that things would be the same and that he would not be punished. So she used her armpits to send a message and she got the guy scared and humiliated at the same time. He knew he was walking a fine line with her and he changed to avoid further humiliation.
Goddess Kiffa was tired of their routine sex and she wanted them to explore different areas of their bodies and today the mistress wanted her boyfriend to lick her armpits. He was shocked at the request but he was so horny and he wanted to fuck real bad so he did what she asked and that is how they started to explore each other's bodies in deeper ways than they had ever done before.
Goddess Kiffa knew her boyfriend was waiting to fuck the shit out of her. But they had fucked the previous night and she did not feel like it today. So she went to work out but when she came back, she did not take a shower. And when her boyfriend went to lick her and to kiss her, she made him lick and smell her armpits and he was turned off.
Goddess Kiffa wanted to shock her boyfriend because she felt that he had taken a lot of things for granted and he needed to be punished for it. So the mistress used her armpit femdom to punish him. He had to lick her sweaty armpits and when he was done, he was scared of her and did not want to piss he off out of fear of what she could.