Hi, my name is Trevor. It's my father's and grandfather's name. I'm the third. It's an unusual name. My sister is named Bonnie, so people have taken to calling me Clyde. Bonnie is two years older than me and is in college while I will start in the fall. I admit to being sort of a nerd. I'm good at computers and video games but have only dated a few girls. I had a girlfriend a couple of years ago but that's about it. I'm definitely a heterosexual as evidenced by my interests in web sites and my interest in watching girls.
I have two older sisters, Bonnie and Marie. I have watched them grow into young women and I admit to sneaking a peek at them from time to time when they wear bikinis or go bra-less. I consider leering at my sisters' bodies to be just the natural intellectual curiosity of a nineteen-year-old male.
The episode that I'm going to tell you about happened a month ago. Bonnie has a boyfriend named Andrew and they are pretty serious. Bonnie and I were home from college for the summer. It was a Friday night. I had intended to go out with my buddies but had worked in our yard all day and fell asleep with a headache. Our parents were away for the weekend. They left Bonnie in charge. She had usually bossed me around since we were kids and when Marie wasn't around to boss me. I just did what they said rather than go through the hassle of resisting, but I would pretty much do whatever I wanted anyway.
Well, Bonnie had heard me say I was going out and assumed that I was gone. My car was in the shop, adding to the impression that I wasn't home. I was zonked out in my room with the door closed. She had invited Andrew over to swim in the pool we have in our backyard. Mom and Dad are well enough off to afford our nice home with a pool. The pool is fenced in with a stockade fence. A fence is a legal requirement. I know that my sisters liked to skinny-dip and would do so whenever I wasn't around. I had tried to sneak around to see them, but had only gotten a brief glimpse of Marie one time. Neither of my sisters is a beauty queen. Marie is voluptuous with big breasts, while Bonnie is the opposite. Bonnie has a thin, athletic build. Her boobs aren't that big, but in my opinion, there is no such thing as a bad set of tits.
It was after dark when I woke up and I drowsily got a drink and put water on my face. My room is on the second floor. I walked downstairs where there were enough lights on to see where I was going. I intended to get something to eat. As I walked through our dining room enroute to the kitchen I caught a glimpse of activity outside by the pool. I looked to see what it was and was not surprised to see Bonnie and her boyfriend. However, I was surprised to see that they were both naked. I stood in the dining room taking-in my sister's anatomy. She was wet from swimming so her hair was laying on her shoulders. Her most noticeable feature was the thick, wet, dark- brown bush. Her titties were hard and jiggled as she walked around. I did notice that Andrew was sporting a hard-on for my sister. I knew I was being a voyeur, but didn't see any harm in looking.
Andrew came over to her and put his arms around her and kissed her. Bonnie was rubbing her body against him to further stimulate his interest. They obviously had done this before. I had suspected that Bonnie and Andrew were "doing it". They maneuvered to where Bonnie was on her back on a lounge chair. I caught a glimpse of the slit between her legs before Andrew climbed on top of her and moved to insert his prick into my sister's pussy. I was entranced watching as they coupled right in front of me. It was better than the porn I watched because it was live and the fact that it was my sister added an element of taboo. Andrew's ass pumped up and down as he fucked my sister. I was just wearing shorts, so I pulled my cock out and began to stroke it. It was surreal. Bonnie had her legs wrapped around Andrew's ass and had her legs spread about as wide as she could.
Suddenly I noticed that my sister was looking right at me. Apparently, she could see me through the window in the dim light from a lamp in our living room. She whispered something to Andrew, who stopped pumping and rolled off. He looked my way too, but I had dropped down to be out-of-sight. It was too late.
Bonnie called to me, "Clyde, get out here."
No way I was going to do that, but Bonnie came to the back door, opened it and demanded, "Clyde, get over her right now."
As I said, I was used to being bossed around by my sister, so I walked into the kitchen to see my sister standing in the doorway. The odd thing was, she hadn't covered up and was stark naked, right in front of me.
"Were you watching us?" she asked.
