Mistress BlackDiamoond is a hot mistress and she wanted to test whether she could use that to humiliate and actually torture losers. She told this hot guy he could do anything to her if she let him fuck him in the ass with a strapon. He thought about it and given how sexy she was, the guy agreed to be ass fucked in exchange to do anything she wanted to him.
Mistress BlackDiamoond is the queen of strapon. She loves using strapons to punish and humiliate slaves because according to her, they are very effective and very efficient. Today she showed her friend how to use it and made her lick it and did to her what she does to slaves so as to demonstrate how she was supposed to use it. The only thing she did not do was stick it up her friend's butt.
Mistress BlackDiamoond found out that her slave had been revealing her secrets and she could not stomach that. Being a secret and quiet and reserved person, she valued her privacy and did not want people in her business. So she did not take it kindly when her slave gave out info about her. To punish him she did something she had never done and that was to fuck him brutally with her strapon.
Mistress BlackDiamoond likes to use strapons to humiliate her slaves. She knows it is painful and it is their worst nightmare. Her slave had largely avoided getting punished by it but it seems he had forgotten that she had it and when he messed up big time, she got it out and reminded him she had it by making him give it a good blowjob and he nearly choked on it.