The air was full with my sister's private smell, the same smell I found when I sniffed her panty, but ten times stronger. It wasn't just beautiful, it...was holy and sacred. My prick was dying to touch or be touched by anything. I wrapped my hand around my cock and started stroking it. There in midst of the living room, me and my older sister were completely naked, horny and masturbating in front of each other shamelessly. I knew we were going so far into this game, but it was too late to turn. He turned around and told her and she smiled and said get in there and he did. I was in the room with just a bra on when they came in and I told him to strip and told her to take off her panties and that I would keep them for a trophy. She quickly pulled off her panties that were very wet in the crotch and handed them to me. I gave them to CUB and told him to put them on and then get down there and eat her pussy good, you only have 5 minutes to make her cum. He got very busy and she pulled his. I watched the movement of her arse as she clambered up onto the fence with her back to me, struggling to hold on as she balanced precariously on the top. Our street is on a hill, and each house and garden is at a different level, stepping up or down. My garden was maybe a couple of feet lower, with a crumbling brick retaining wall underneath the fence. Clearly, she didn’t fancy the leap down. Instead, she reached down tentatively with one leg, perhaps too dim to work out that she was never. "What do you see that turns you on most, Robin?" he asked in an almost-professorial way that temporarily eased my nervousness."The kissing," I answered. "I guess I get turned on when I see the menkiss each other." Come with me, then," he ordered, taking my hand and leading me to thevideo arcade. It was almost pitch-black there, but he had no troublefinding his way to a fairly small booth. We were forced by the lack ofspace to stand close together while he took a five-dollar bill from hispocket.