I stood perfectly still while the material sagged and wrinkled and slid down me a little at a time. It hung around my hips, twisted and draped, and I ...ugged at the bra cups Mark had shoved up. My boobs filled them again and I worked one shoulder strap real slowly off my shoulder, then the other, and pulled my arms out of them. Mark's eyes bugged as he stared at me. "Sis?..." His voice sounded strangled. "Sis! You're!..."When he stopped and didn't say what he'd started to, I pushed my bra down. Williams," he said, "may I offer a suggestion? Rather than scar her body, consider an alternative. Let her remain my slave for the remainder of the week. I will use this time to humiliate and punish her while at school and afterwards. The effect should be much better than a whipping."Mr. Williams thought for a moment and answered, "What do you have in mind?"He and Bill stepped out of Natalie's hearing. Bill's cock began to harden as he expressed his ideas. Mr. Williams beamed at his. When she said I could leave my jeans on, what she meant was that I could take them off while she lubed up a vibrating egg. She turned it onto a very low setting, just enough to keep me aroused but nowhere near enough for me to even entertain the idea of having an orgasm.After I slid off my briefs, the same pink as strawberry milkshake, she slipped the egg inside me. It was purring like a pussycat. She kept it in place by getting me to wear the black latex briefs she got me a few weeks ago.. This was one of my favorite times together, It felt so amazing touching him, feeling all the sensual spots on his body. Feeling his manly hands touching me all over my body, finding all of my sensual spots. It wasn’t long before we discovered a new trick, I can now take his whole cock all the way in my mouth. All the way to the very back of my throat, without any gagging, only if he is choking me with his hands around my throat. It felt so good, I loved the feeling of his hands around my neck,.