Williams, we all wondered if you could tutor us some on the things we've been studying in your class," Amy said, the shortest of the young sexy threes...me. Fortunately for Rob, his wife and the kids had gone out of town that afternoon to visit her parents so he was all alone in the house. All alone with only him and three young sexy teenaged girls and nothing to stop them from having a ball. He intended to take full advantage of this unusual situation."Come on in, ladies," Rob invited as he let. Rick obliged me by taking every drop. I massaged his balls for a moment and felt him thrust harder and suddenly let loose with his second load of the day....I swallowed every drop. We laid there resting for a moment, then he asked me to tell him about Walter again. It was at this point that I started thinking about introducing Rick and Walter. I didnt tell Rick my idea yet, but I thought that if I saw Walter again Id try to figure out if it would work. I mean as far as i could figure Walter was. She froze staring at my cock. I didn't take notice for about 10 seconds, then followed her eyes down to my crotch and realized her view. As I looked at my cock, it twitched and she jumped.She slowly turned away and walked down the hall. I was fully hard now, realizing how close she was to my cock. I hung up the phone and stroked my cock until it exploded. From that moment on, we looked at each other differently. I would purposely leave my door open while I masturbated or changed my clothes when. It was all for him.Not that he knew that, of course.The third night, we’d pushed it. My parents had bought some schnapps, and without saying a word, Emily and I had both agreed to act much more intoxicated than we were.Half a bottle in, we were on the couch, making out. We were clothed, this time, but it was such a thrill. My lips on her lips, my hands on her skin, both of us knowing - knowing - that we were being watched.That Justin - Justin - was staring at us, his lesbian older sister, her.