He'd told her in the morning that today would be a punishment day, as she knelt in front of him, fresh out of the shower, freshly shaved, giving her owner his morning blow job. He pressed the back of her head towards him, saying, "All the way." Obediently she took him deeply, pressing her lips into his pubic hair, holding him within her throat and restraining her gag reflex easily, thanks to her training. "Tongue!" he said sharply, twisting her hair, and she started moving her tongue over the bottom of his cock, and stretching it out to lick his balls.
"I am deeply dissatisfied with your performance last week," he said. She'd known this was coming. He'd been away several days, and she had neglected more than once to check in with him in the morning about what she was wearing. She was supposed to do it every day without fail, unless he'd instructed her what to wear, but she had been waking up late without him and rushing out the door.
"You must learn that these rules are not optional," he continued. "And until you do, you're going to be punished. Do not eat anything after lunch today. Come straight home after work, and assume punishment position the moment you walk in the door. Is that clear?"
She nodded, his cock still buried in her mouth. He released the back of her head, and she resumed sucking him the way he liked, slow and deep, using her tongue. He came in her mouth, and told her not to swallow. She held his come in her mouth, obediently, while he went to her closet, and returned with one of her corsets, the high white satin one that covered her breasts and descended almost to her pubic bone in front. She placed her hands on her head without being told, and he wrapped it around her, tightening it hard and lacing it up. Wearing it all day would be a challenge; it made sitting, standing and walking more uncomfortable and more difficult. Then he went into the jewelry drawer and took out a string of small silver beads, looped several times through a small ring. He attached this ring to the ring that pierced the hood of her clit, where the beads would bounce and tease her clit the whole day.
Then from her closet he got a long black wool skirt and a red v-neck sweater, and put them on the bed in front of her. "No underwear today." She moaned, knowing that meant the beads would be free to tantalize her constantly.
"Get dressed, and swallow when you're done," he said, and left the room.
Eight hours later, she was tired. Continually short of breath all day, the corset digging into her, and constantly distracted by the gentle touches on her clit, she'd been less focused than usual, and a few co-workers had asked if something was on her mind. "Yes," she thought to herself, "Being fucked."
She opened the door of the apartment, put down her laptop bag, and dropped to her knees with her head on the bench where their shoes were stored. She raised her skirt to her hips and laced her hands behind her neck. Face down on the bench, she waited.
After a few minutes, she heard his footsteps. His hands caressed her ass and spread her cheeks, and then she felt the slow trickle of thick lube around her asshole. She gasped as cold metal slid quickly into her. Her Master was careful and never caused her discomfort unintentionally, so his not having warmed it up in advance must be a part of her punishment. It felt like the largest of the stainless-steel plugs he liked her to wear for long periods, and its coldness was spreading inside her.