Lady Shay did not like how this guy spoke about her ass. She overheard him talk to his friends about her ass and they laughed at her. She pretended not to notice and since they did not know her, she played it cool. She then laid a trap for the guy and when she caught him, she used the same ass he made fun of to humiliate and punish him.
If you happen to make fun of this mistress' fat ass, she makes sure she uses the same ass to humiliate you and to teach you a lesson. She is the kind of mistress who is patient and will plan her revenge or punishment to the last detail then carry it out meticulously. That is what she did to this loser. She had him lick her ass and smell her farts as punishment.
This mistress was not pleased to learn that her slave had not done what they had agreed on. She wondered why he had not done it and when she asked him, he kept quiet. She was pissed and as punishment, she turned on him and she cruelly used her fat ass to humiliate him. She farted on his face and she made him lick and smell her ass. He had no choice.
This mistress did not like how this guy snitched on a guy in her class. She could not stand it and she had to teach the snitch a lesson. She was not the one snitched on but she had to do something. She did it by trampling the guy and forcing him to lick and smell her fat ass as she facesat on him. She caused him a lot of pain with her fat ass.