Sister s Teenage Friends
By the time I was 17 and my sister was 15 we had been frequently mutually masturbating one another even though our parents had a family rule against any touching between the two boys and our sister. But teenage hormones made it difficult to adhere to that rule. In fact, we had gone quite a bit beyond masturbation. I had an unusually large penis for a teenage boy. It was nearly 7-1/2" long and fairly thick. My sister was very fascinated by the size of my cock and often commented on it. I...