The Domination Game

Kathy agrees to let her boyfriend Matt play a game of domination for a birthday treat. She gets to subject him to a variety of punishments of increasing intensity but if he can guess the colour of her panties, the positions are reversed and he gets to dominate her. As the night draws on, the game becomes more unpredictable and both of them go further than they expected. This is a 10, 000 word story with themes of domination, control and humiliation.
A sample is below. Having finished buttoning herself up, Kathy looked down at Matt. "You like these boots, don't you, " she said, shifting her weight to one side making the boots rub against one another. She had almost read his thoughts. "They haven't had a clean in ages though." She extended one towards Matt. "Lick it clean slave."Matt shuffled forward eagerly and grabbed the boot with both hands.
Slowly he lowered his tongue to the top of the boot. It tasted odd but not unpleasant. He worked his tongue up the length of the boot, feeling the texture of the leather and the shape of Kathy's calf underneath. After a few minutes, Kathy pulled the boot away. "You have done quite a good job but missed the sole. Do a better job with the next one."As she extended the second boot towards him, Matt bent down in order to get a better angle to lick the bottom of the boot.
Kathy hadn't had the boots for that long so the soles were relatively clean, but Matt thought he could detect an unpleasant taste. He wasn't sure if it was just his mind playing tricks on him given that he had expected it to be unpleasant as he couldn't see anything on the sole. Having finished with the sole, Matt brought his tongue to the top of the boot and started working his way up, still with a bitter taste in his mouth.
Suddenly he realised that he could see partway up Kathy's skirt. Her black lace stocking tops were clearly visible. If he could just move her leg a bit, he might be able to see her panties which would put him in control of the game. Despite himself, he started to grin. He would be guaranteed to be fucking Kathy's virgin ass tonight. He could hardly contain himself at the thought as he started to manoeuvre himself into position.
He must have looked too eager. "That is enough, " Kathy said, lowering her boot. Matt's brief moment of elation disappeared. "What are you smiling about?""I was just enjoying serving you mistress, " said Matt trying to look suitably humbled.