This will be a short story about the events that took place a few summers ago. My name is Jake, or Jacob as my mother calls me. I was 19 years old at the time of this story. The other members of my family are my mom and dad, and my older sister (by 13 months), Terry (Teresa to my mother).
The school year had just ended for my sister and me. We both attend the local university, she being a year ahead of me. Both of us had secured summer jobs which were set to start in two weeks for me and in a month for Terry. This gave us a couple of weeks free to just enjoy the start of summer vacation before having to report for work.
My father has a successful architectural business and my mother does some free lance consulting, so our home situation is very comfortable. We live in an upscale, quiet neighborhood on a few acres that gives us plenty of privacy.
Growing up, Terry and I got along. Sure, we sometimes quarreled, but in the end, we were supportive of each other and always protected each other from getting hurt by others. Being the more adventurous one, Terry sometimes got into some dicey situations. I was always there to bail her out and to protect her. And she was always there for me.
Back to the story. It's the start of summer vacation. My sister and I have some free time before our summer jobs start. The family is all together for Wednesday night dinner when my parents tell us they have some news to share. Dad received a commission to help design a complex out of state. Since it is such a major undertaking, he will be leaving in two days to meet with the developers of the project. He will be gone for at least three weeks. Furthermore, my mom will be going with him, as they have decided to take this opportunity to turn it into a kind of second honeymoon. What that means for Terry and myself is that we will be on our own for at least three weeks.
Both Terry and I are close to our parents and get along great with them. We both said we would miss them but wished them a good time. We promised not to trash the house and not to have round the clock parties. Those ideas would never occur to either of us. In fact, for me, the fewer people around the more I was planning on taking things easy.
Friday came, the day for our parents to depart. All four of us rode to the airport together. Terry and I reiterated we wouldn't be doing anything crazy over the next three weeks. We said our goodbyes and watched as they boarded their plane and took off. The ride home was weird. Neither of us did much talking. I think we were both just trying to get our heads around the idea that for the first time in our lives we were on our own, for three weeks at least.
We got back home and Terry almost immediately left again. She said she was meeting up with two of her girlfriends but would be back in time for dinner. I told her I was planning on just throwing some burgers on the grill so she didn't need to worry about missing the meal if her plans changed. She said before leaving that she would call if that in fact happened.
The house was pretty quiet after she left. I tried watching some television, but nothing caught my eye. I checked emails and news headlines on my computer and tried playing some games, but I was soon bored. It was now early afternoon so I went out to the backyard and decided to give the lawn a quick mowing. A quick mowing turned out to last an hour and a half. To boot, the humidity ticked up and I was covered in sweat by the time I was finished. I decided that, being bored and sweaty, the only thing I could do was uncover the pool and relax for the rest of the afternoon. I got the cover off, went inside to change into swim trunks and was soon floating and otherwise enjoying the day.
I spent the rest of the afternoon in and out of the pool. At about 5 o'clock Terry returned home and found me basking in a lounge chair in the backyard. She said she was going to change into her swimsuit and would be out to take a dip in the pool. I told her I would fire up the grill and get started with the burgers.
Terry came out of the house a few minutes later wearing a very skimpy red bikini. My sister has a great body, if I say so myself. She's about 5 foot 8 inches with shoulder length blonde hair, which she had tied back in a pony tail. Her legs are long and end in a tight looking ass. (Yes, I'm her brother and I shouldn't have such thoughts, but I do. She's cute but I had never thought of doing anything illicit with her.) Terry also has great tits, firm and full. The red bikini really accentuated her assets. I stared as she crossed the yard to the pool, and I got an erection that the grill hid, for which I was grateful. Once she was in the pool I headed into the house for a shower (cold, of course.)
By the time I returned to the patio and the grill fifteen minutes had passed. The grill was ready for the food so I retrieved the burgers from the refrigerator. I also grabbed some potato salad, the condiments and a couple of beers for Terry and me. Technically, neither of us is of legal drinking age, but our parents allow us the occasional beer or glass of wine as long as we are staying at home and are not driving around.
I shouted to Terry that I was getting ready to throw stuff on the grill and it should be ready to eat in fifteen minutes or so. She answered back that she was going to go grab a quick shower and would be back just about the time everything was done. She looked great when she entered the water a short time ago, but she looked better getting out. The bikini clung to her body and I could make out her nipples. Needless to say, my cock responded and I tried to hide my body's reaction to seeing my sister. I'm not sure how successful I was as Terry gave me a funny look just before she ducked in the house.
I was able to regain control of myself while she was gone and I focused my attention on the meal preparation. I was just getting ready to remove the burgers from the grill and plate up the food when Terry came out to the patio. She was wearing an over sized tee shirt that came down to about the middle of her thigh. I had seen her dressed like this plenty of times before as she seemed to prefer this type of outfit. What I did notice this time was the prominence of her nipples. She was obviously bra less and her nipples were doing their best to poke holes in the fabric of the tee shirt. I knew I'd have to pay attention to keep from revealing the erection I again had.
I handed her a beer and a plate with a burger. She took both and went to sit at the table. She spooned out some potato salad and garnished her burger. I almost laughed as she immediately attacked the food and beer. She saw me staring and told me she hadn't had anything to eat since breakfast. I just laughed and joined her at the table. Between mouthfuls of food and swigs of beer we engaged in some small talk about our plans for the next three weeks. My plans hadn't really changed. I was going to take things easy until my job started. Terry kept pointing out that we were on our own with no supervision for that time. She asked if I had any plans to "cut loose." I repeated that I was just relaxing while our parents were away and had made no plans beyond that.
We finished eating and I shut down the grill. I helped Terry carry any leftovers and dirty dishes into the kitchen. Since I had done the cooking, Terry offered to clean up. I grabbed another beer and Terry had me grab another one for her. Beers in hand I made my way to the family room. I flopped down on the sofa and switched on the TV. Terry came in to join me five minutes later as I was switching through channels, looking for anything interesting to watch. She reached for the beer I had for her and slid on the couch next to me. After some back and forth on which channel we finally settled on a movie. It was a comedy and had some good scenes so we both were giggling at points, especially once the beer started taking effect.
During a commercial I grabbed two more beers and took a quick bathroom break. I was feeling comfortable, and despite Terry's tits still trying to bust out of her shirt, I was able to keep my dick under control. That all changed once the movie ended, though. It was now starting to move into dusk outside, not fully light but not completely dark either. Terry asked what we should do now. I told her I would probably just head up to my room and surf the web for a while before turning in. She just laughed and said I was going to check out some porn sites, which caused me to blush (since she was right.)
Once I was able to speak without stuttering I asked Terry what she was going to do the rest of the night. She seemed to be thinking about what she would say in response to my question. After about thirty seconds she said she was going to go back in the pool. I said that maybe I'd join her, after putting my swim trunks back on. Terry told me I wouldn't need them, that she was going skinny dipping and that I should join her. With that she stood and walked out through the kitchen to the patio door.
She looked over her shoulder at me and then grabbed the hem of her tee shirt and pulled it up over her head. She dropped it on the floor and then removed her panties, which she tossed on top of her shirt. She slid the door open, turned her head to look at me and told me to come join her. She had a devilish look on her face. I was in a state of shock, but my eyes followed her as she made her way to the steps of the pool and climbed in. My mind was a blur. I was confused about whether I should do something I knew was wrong or should I join her and just enjoy the experience. I think at that moment my cock cast the deciding vote because it was standing at full attention.
Still not exactly sure what I would do, I began to walk toward the pool. Terry was leaning on the side of the pool watching me and smiling. She told me I couldn't come in the pool unless I lost my shorts. By this point I was at the pool. It was decision time, and I again let my dick decide. I unzipped my shorts and let them fall to the ground. I hadn't been wearing any underwear because I hadn't bothered to put any on after my shower earlier in the day. Terry made a wolf whistle and told me to come join her in the pool.
I could feel her looking at me as I ascended the stairs and stepped into the water. I swam over to the side of the pool she was on. Terry asked me if it was so difficult a thing to do. My only response I could give was that she was my sister. She shushed me and started to ask me some questions.
"Am I cute?" she asked.
"Absolutely!"
"Am I naked?"
"Duh!"
"Are you having fun?"
