”My jaw dropped and my eyes widened; she was pleased at my reaction.She then told me she’d browsed online porn sites; as did teenagers these days;... and had discovered a whole range of sexual practices!She’d surprised me a little but I accepted it.But then she did shake me; by saying that the kind of guy she wanted, was one who enjoyed sadomasochist sex!“Do you know any guys like that around for me Jake?” She asked wide eyed.I guessed she was trying to impress me but I played it cool, “Oh that -. Moisture in fronts like these can build up only so far before having to release explosively."I smiled at the image of "precip" from his "frontal system," and its "explosive release," just as I'd hoped his smile meant that he was thinking the same of mine.Stretching his body forward now over the table's top left corner as if to point to a distant spot on the map, his well packed pouch slipped smoothly further onto the work surface. I recall that he made some reference to the trouble "occluded. I ordered a takeaway when we arrived at Mary's but had to go and collect it as the driver wouldnt come out in the snow, eventually I got back with the food, Mary was waiting for me snuggled up by the fire. She was hiding under some blankets when I got there, I was hoping she was wearing something sexy underneath, I wasnt dissapointed, but we had to eat first whilst she teased me, letting me stroke her stocking clad legs and giving me a flash of cleavage, this was having the desired effect on me. “I am sorry. I didn’t know you would be doing *that*.”“Well, what the fuck do you want?”“I just wanted your laptop to make a PPT. Sorry for that.”“It’s alright, just don’t tell mom and dad about this, got it?” she replied in a calm mood now.“Yeah, sure,” I said with a sense of satisfaction.My sister came back to my room after a few minutes with her laptop in her hands. She handed it over to me and then left my room without saying a word. I again felt embarrassed. I had seen my sister naked.