A Stepmother's sin - Ch 8 - Robert returns to college - the end of a wonderful summer: - Sex Stories

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A Stepmother's sin - Ch 8 - Robert returns to college - the end of a wonderful summer:

Date: 11/18/2017, Categories: Taboo, Author: submissivemom72, Rating: 9, Source: LushStories

vibrating device, I realized there was yet another problem with ‘geometry’; one that Robert had not anticipated. The vibrating head was far too high for me to mount from the floor. I was not nearly tall enough to straddle the damn thing in place, on the chair. Robert tried to have me stand on the chair seat and lower myself down, while he steadied the chair. But it was far too unsteady, and there was no way for me to lower myself on this enormous device without truly ripping my pussy in two. And the scene of me trying was neither sexy nor graceful, I realized. I climbed down off the chair. “Baby, this just is not going to work. I can’t climb on that damn thing without really hurting myself. And I mean really hurting myself, baby.” As I spoke, I realized, now that I was back to attempting to comply with Robert’s instruction, I had returned to calling him ‘baby.’ I was back in compliance and submissive mode. I was learning some things about myself. Robert stood and studied the situation for a second, and then his face lit up. “If Mohammad won’t come to the mountain…” he said in a moment of epiphany. I saw no reason to correct his obvious misquote here, I had more pressing concerns. After wrestling the vibrator free of the chair with a loud 'pop', Robert took me and the vibrator back to the couch. He laid me back, pushed my heels back towards my ass and spread my knees apart. “Mom, hold yourself open for me.” "What are you planning to do?" I asked with obvious concern. While I ... wanted to comply with Robert's desires, I also was very concerned with hurting myself. "Mom, we'll get the vibrator inside you first, then have you walk over to the chair and I'll teach you how to cum without me here." He sounded so very confident this would work. However, I was pretty apprehensive myself. But I decided to comply, as I almost always do with my stepson's requests. I reached down, and pulled my vaginal lips open as instructed, realizing that I had lost all semblance of modesty around my stepson. I was opening myself up in the most obscene manner possible for Robert’s gaze and pleasure. He placed the head of the huge device at my opening and started to slowly work it in and out, penetrating me about a inch at a time. “Oh, Robert, be careful. I don’t know if I can do this baby,” I cried out. There was a real sense of panic in my voice. The size of the head definitely scared me a bit. It simply felt too big. “Not too fast, baby, go slow. My God. I don’t think it is going fit, baby.” The huge head was stretching me wide open. Maybe, it was because of the texture of the unyielding plastic head just created more friction than a real penis. Maybe it was simply larger than Robert was. Maybe, because I was scared, I simply was not as open, lubricated and aroused as I had been when Robert was fingering me moments before. But, regardless, I was struggling to accept this enormous device in my vagina. It was stretching me to the point that I did not know if I could take it. ...