When I left for college, I kissed my sweet innocent little sister good-bye. Soon the tan young guy stood up, and my sister's small hands began to unsnap and unzip his shorts. The water was cold despite the heat outside. Four of them. Exhausted, she tumbled beside me on the bed. The scene on the bed made my heart stop and my cock stiffen. Already defeated. The ache had been coming from a muscle in my lower back and she worked it relentlessly with her soothing thumbs until the knot all but disappeared. Without mercy, she teased me, holding back what I wanted so badly while I lay there like a slut offering everything. I tried to read something from her expression that would tell me that she was feeling different too.