I've always been a large person, and I don't mean fat. At the age of 15 when this happened I was 5'10" tall and had an eight inch fairly thick cock. I'm now 6'4" tall and my dick is a very impressive 9.75 inches.
My aunt Jenny, my moms youngest sister would visit us often and not long before my 16th birthday, she caught me masturbating in our snug room to a porn film. Rather than tell my parents she made me promise to visit her at home, which I did three days later. After arriving, she asked me if I was still a virgin. I wasn't a virgin when I left two hours later. The sex wasn't brilliant as I was far too eager and inexperienced, six months on and then 16, I was fucking my married aunt three or four times a week, as her husband worked away six weeks at a time. We stopped when they moved for his new job.
Recently though they've moved back and she's hinted about us getting it on again. I'm really struggling to say no, as she's kept herself fit and she one damn fine looking 42 year old.