"Two things, bitch. You keep yo' eyes open and yo' teeth off my cock. Now suck it!" Before I could say anything, he reentered my mouth, pushing hard a...t the back of my throat. I was gagging and having a hard time breathinout of fear I decided to go for it and get it over with as fast as possible. He tugged on my hair snapping my head backwards and realigned that monster dick again. He stutter stepped closer and pressed is bulb against my lips for a second time. This time though I reluctantly. I always remember this beautiful episode of the mirror also if in the end I had a little mockery :-P, but I certainly couldn't curse our mother :-P, also because if at that moment that my mother has cover me that beautiful vision the luck had turned the back to me (so to speak :-P) shortly before this episode always thanks to the nice tunics for the house of my sister (in addition to the episode of the best erection of my life i.e. that she was sitting on a chair with her bare and white legs. As I squeezed tighter she choked out, “I am yours, master!”I released her throat and reached for her nipples. They were hard as erasers. I squeezed. I felt her flinch and then moan, “Uhhhhhhh. Tighter, sir.”I pinched and twisted them like I was trying to rip them off. She just got more excited, now thrusting back against my cock as hard as I was pounding into her. I knew she was close. I ran my hands down the side of her body--feeling each rib slip past my fingers-- as I made my way to her hips. You can say 'stop' at any time and I'll take it off, but for every single minute short of six hours you will get one lash of the whip. So for example if you hold out for four hours that is two hours short, that is 120 minutes, that means 120 lashes. You game?" All right, fine. But I still think you could have done your homewo..." "Great, sis", I cut her off, "Let's get started then." Like last time, I tie her down (face up) on her bed, then I tape the vibrator to her clit. It is freshly loaded.