“What are you dreaming about over there?” Rachel asked, drawing me out of my thoughts.
I adjusted my towel on my lap, covering the bulge in my swim trunks. “Nothing now,” I said. Rachel was attractive. She was the typical cheerleader with perky breasts, nice legs and a pretty face. I’d seen her walking around in her panties and bra before and knew that she would have plenty of guys chasing after her.
I stood up and said, "I think I’m going to go take a nap in our room." I excused myself to my parents and disappeared towards the house.
Our house was a good seventy yards away from the beach. As I entered our empty house, I still had an erection from thinking about Rebecca. I went to our room and closed the door behind me. Quickly pulling off my swim trunks I situated myself on the bed and began stroking my cock thinking about Rebecca’s pussy sliding down my cock. My pace was quickening when I heard a creak. I turned towards the door and saw it quickly close.
I shot out of bed and pulled on my trunks. Who was watching me? I approached the door not really ready to be angry but more hopeful my parents hadn’t just walked in on their son.
I opened the door and walked out into the hallway. No one was around. I went into the living room and no one was there. I decided to go back to my room and take the nap I had announced earlier.
The rest of the day was uneventful. That night, I had a hard time getting to sleep. Partially due to the nap I had taken and partially because I needed a release. I finally realized I wasn’t going to sleep and was just going to lay there. Within a few minutes I heard a gentle rustle from Rachel’s bed. The rustle grew into a steady sound. The sound a hand or arm makes moving in a repetitive motion against sheets. Suddenly there was a muffled moan and I knew my sister was playing with her pussy. I lay there quietly at first not knowing what to say. Then without thinking, I quickly reached over and turned on the lamp between our beds. She quickly played like she was sleeping.
“Rachel,” I said softly. No answer. “Rachel? Rachel, I know you’re awake. I heard you.”
She turned. Her face showed slight embarrassment. “Don’t say anything.”
“I won’t," I said. “Listen, did you walk in here today when I was taking a nap?”
Her face turned a few more shades red. “Yes, and I’m sorry. I didn’t know… ”
“You’re fine,” I said cutting her off. “How long were you there?”
“Long enough to see you were really getting into it,” she replied.
“Well if you don’t say anything, I won’t say anything. Deal?”
“Deal.”
I nodded and turned off the light as I swung my legs back into bed. After a few minutes Rachel called out, “John.”
“Yeah?” I replied.
“Can I watch you?”
“What?”
“Can I watch you jack off?”
I couldn’t believe what my sister had just asked.
“Seriously?”
“Yes. Don’t be a jerk.