Mistress Lorena was out to degrade and she was not going to stop at anything to make sure she got what she wanted. So she used her humiliation fetish to punish and humiliate the guy. He was given a used condom and asked to eat the contents. He could tell from her look that she was serious about him doing and he had no choice but to do it.
Mistress Lorena wanted to show this guy what she does to people like him who mess with her and she did it with her strapon. She wanted him to learn his lesson the hard way and that is why she did it in a way he would never forget. As a straight man, she made him feel humiliation as she deepthroated him with her huge strapon. And she scared him that she would use it on his ass.