Stan pulled out his finger and spanked her bottom, “Ok. That was a good learningwindowsphone.com first try. But you'll need practice. I've got some homework for you. Then we'll meet midweek to see how you're progressing.” With that he pulled up her thong and shorts and guided her back to her chair. She was dazed and still high from her orgasm. He left the room for a little while leaving Sally alone to think about what had just happened. Her head was spinning. Her heart was pounding. And her body wanted more. It made her wondered what her homework would be.When Stan returned he had a small bag with a butt plug and lubricant, “Put this in your butt each day for ten minutes or so. Longer if you are comfortable with it. Then on Wednesday, put it in and walk down here for your next lesson.” Sally was still dazed and looked up at Stan with the butt plug in his hand. “Once its under your clothes, no one will know its there. You could even where it around your house. If you want.” Sally's eyes opened wide. It transfixed her to imagine what it would be like.Here. Let's try it now.” Sally stood up her head turned for the door but her body wouldn't move. Her groin was throbbing as she visualized what she was supposed to do. He bent her over and she pulled her shorts and thong over her round butt by herself again. She watched as if from outside herself as Stan demonstrated, “First you put a little lube on your bottom, then some on the plug.” Sally sighed as the plug pushed against her tight hole. “Then slide it in and out a couple times.” She could feel it stretching her tender butt. It slid in and out smoothly. Gently. Sally closed her eyes as the sensations filled her body and mind. She tried not to think about it being someone's dick. Until.Then you push it all the way in.” It started to hurt as it stretched her further until it popped in. She stood up and shook, “Ooh!” Sally tightened her cheeks. Stan wiggled it around making sure it was in all the way then pulled up her thong and shorts, “See there. You can't even tell its in. Go ahead and walk around.” She took a couple steps before stopping and shaking again. Then she walked back to Stan with a waddle. Then putting her hand on her bottom she felt around. When she brushed past it her butt twitched. She could barely feel it but she knew it was there.Stan saw her face when she touched it. “Maybe you should just wear it home.” he spanked her right on the butt and handed her the bag with the lube and walked her to the door. She tried not to waddle and did her best to act nonchalant. “Remember, once a day for at least ten minutes. Then Wednesday wear it and come here for your next lesson. Got it?” Sally shook her head yes. A smile plastered on her face. She was still in a daze. That was one of the best orgasms she had ever had. Stan's voice echoed, “4 o'clock.” Her mind couldn't focus but her body would remember, 'Wednesday 4pm – wear it here.'