I didn't mean for you to see me like this." "That's alright Ian, you are not the first big boy I have seen." "Can I come in for a few minutes, baby?" ...OK, Gran," I said as I quickly covered myself up with the sheet. Gran came and sat on the side of the bed, and slid her hand onto my leg. "So, my boy, what have you been getting up to in the last few days, while you have been visiting us?" "Generally, just wandering around the town and reading in my room most of the time, Gran." As she sat there. I had a hard on for well over an hour on and off thinking about walking up behind her and sticking my cock into her lovely pussy there and then in our front garden..I decided to get some of her lingerie out and some sexy sandals and get her to put them on for me. This was making me even hornier, I took out a bottle of poppers and various dildo's and lay them on the sideboard in preparation of our sex session. I was in my own little world and I thought to myself that i'd try on some of her gear. I almost didn’t need the light of the full moon to be able to recognize the person in front of me. She looked adorably rumpled, her hair tousled and her body covered by a wrinkled old nightgown, an old quilt covering her shoulders, boots about three sizes too big covering her feet. At least she was wearing slightly more clothes than the previous morning’s too short t-shirt, thank god for small mercies. She walked slowly down towards the lake and I watched her, trying to gauge her mood,. If this is what she wants, this is what Ill give her. He went back to it relatively smoothly, and fell right back into his pull-suck-push-suck rhythm. I began to harden more quickly under his actions. Surprisingly, I soon realized that although we had a witness, I was rapidly approaching again the point of no return. I pulled my hips back ever so slightly. For some strange reason, I didnt want to come with her watching. It just seemed wierd. Geoff stopped for a moment, and just then she.