This mistress could tell that this guy was into her. She knew it was by a lot and so she wanted to have fun at his expense. That is why she went and came back with a panty that had her pussy discharge and she wanted him to lick it. She told him it would drive her nuts if he did and she would be horny. The guy did it but he realized it was a prank.
Lady Rockabella wanted to communicate to this loser and she felt that she had to do it with her forced bi fetish. The mistress went ahead to turn the guy bi and to make him do all the things that came to her mind. The poor guy had no choice but to do whatever she wanted him to do and he did it as he was under her influence and total control.