Hello, my name is Jim. I'm eighteen and nearing the end of my Senior year at the local High School. I live with my parents and 19-year old sister Karen. We are, most likely, a fairly average family. My parents both work regular daytime jobs, my sister is currently working as a clerk, almost full time, at a local building contractor. Like I said, I'm a High School Senior expecting to start college (locally) in the fall and, I'm proud to say, the starting Catcher on the High School Baseball team.
Karen and I both have birthdays in March. Our father's birthday is in June; so, I guess we know what he got for birthday presents those many years ago. I get along fairly well with my sister and we had a normal childhood. We both have brown hair and blue eyes. I'm a few inches taller than her at just about six feet. We're both relatively slim but not skinny. Karen has a nice attractive body, average in the boob department and just the slightest bit of a bubble butt.
There was an announcement over the school PA system just after the start of last period: "Baseball practice has been cancelled for today due to a fire near the field. The coach asks all member of the team to report for practice Monday, as scheduled." Wow that's a first. With nothing else to do I headed on home arriving about two hours earlier than expected.
I thought that I was alone in the house. My parents would not be home from work for another three hours and my sister was not to be seen. After a cursory rummage through the fridge, I headed upstairs to change out of my school clothes and noticed Karen's bedroom door closed. Thinking that she may be in there taking a nap I tried to be quiet as I went on into my own room. I was sitting on my bed, removing my shoes, when I first heard some noise which seemed to come from my sister's room. I couldn't be sure what it was, but I was curious.
My sister and I share a connecting bathroom between our rooms. So, after removing my pants and now in just sox, underwear and T-shirt, I went to my bathroom door and found it unlocked. Opening it slowly, I could see that Karen's door was mostly closed, but not quite. Once inside the bathroom I could hear some rustling and heavy breathing from her room. The slightly ajar door let me get a peek into her bedroom.
Karen was laying prone on her bed, naked. Her boyfriend, Carmine was just as naked and laying on top of her. They were both facing the window with their heads turned away from me. He was thrusting his hips and, I thought, he was fucking her from the back. I was certainly surprised to see this and, for a few moments, didn't know what to do? My cock reacted before I did.
I was immediately aware that I was tenting out my Jockeys. Deciding that there was nothing to be gained by revealing myself, I promptly retreated to my room, carefully closed my bathroom door and proceeded to hastily 'rub one out' using the mental picture of my sister and Carmine as fuel. As usual, after a good wank, I faded into a short nap right there on my bed.
The next thing that I knew someone was knocking on my bedroom door. I managed to get out a sleepy: "Yes?" It was Mom telling me that supper would be ready in ten minutes and that my 'presence was expected.' After acknowledging her message, I dragged myself back vertical and pulled on a pair of cutoffs. I slipped on a pair of slippers after removing the one remaining sock (The other one was lying next to my bed, full of cum).
Karen was already sitting at the table along with Dad when I got to the dining room. I took my usual seat and joined in on the conversation as Mom brought in the dinner tray. Being a work night, the dinner was simple and quick. Dad asked me how the team was progressing and I told him how todays practice had been cancelled. Mom asked if I had used the time productively like going to the Library or doing some homework. I told her no, that I had just come on home and ended up taking a nap. Dad asked me what time I had gotten home to which I answered: "about three."
You could hear Karen's eyes snap to look at me. Her mouth dropped open for a second or two and a little of the color drained out of her face. My sister was remarkably quiet for the rest of the meal while Mom, Dad and I chatted on. By the time that dinner was over, Karen had recovered a little but remained subdued. She had a worried look on her face.
For the last ten years or so, our routine has been that, after dinner, Karen and I would clear the table, put away any leftovers and do the dishes. Mom insisted that the dishes and silverware be wiped down (pre-washed) before being stacked in the dishwasher. It was Karen's turn to put her hands into the sink and mine to load the machine. We started our chores as soon as Mom and Dad left the room.
We each took armloads of dishes, glasses and silverware out to the kitchen sink. Karen started the water running and, there being no leftovers, I opened the dishwasher and prepared to 'load-er-up'. Karen was noticeably silent for a few moments. She told me to check that 'the parents' were in the family room watching the news, as usual. I quickly did that and returned confirming that we were, in fact, alone in the kitchen.
"So, what time did you get home today?"
I looked at the clock in the stove: "Like I told you, a couple of minutes after three, why?"
"Did you know that I was home at that time?"
"No, not when I first got home. I did hear you and then saw you fucking with Carmine on your bed. "
It's a good thing that there was water in the sink. Karen startled and dropped one of Moms crystal glasses. Luckily the water in the sink broke the fall and the glass emerged intact.
Karen lowered her voice: "I wasn't 'fucking' Carmine."
"Well, it sure looked like it, what with you laying naked on your bed with him laying, also naked, on top of you. But I could be mistaken?"
Karen was quiet for a few moments before: "We weren't fucking! It might have looked like that but we weren't; I promise."
"Then what were you doing all naked and such?"
Karen was just letting the water out of the sink as I was closing up the dishwasher. We quickly scanned the kitchen and dining room seeing that all seemed to be in order. I started the dishwasher and followed her back into the dining room.
"I'll talk to you later, ok?"
I agreed and we joined our parents in the family room.
Karen and I sat at a sibling correct distance on the family room couch while we suffered through the early evening programming with our parents. There were no activities at the school that Friday night and, apparently, Carmine had to work. So, we were all home for the night.
Around nine Mom started to show her sleepy face and Dad wasn't too far behind. I excused myself to go do some 'homework' on my laptop. Shortly thereafter, Karen decided to 'take a shower and turn in early.' The family room was soon dark, quiet and empty.
I had just gotten online and started to search for some decent porn when I heard my bathroom door open with Karen slipping into my room taking up a sitting position on my bed: I instinctively opened another browser window and started searching for baseball scores.
"We weren't fucking."
"This is getting old. What else do you do when you're naked, horizontal and humping?"
"More important than that - what were you doing spying on me?"
"Don't change the subject - you were fucking Carmine - admit it."
"Why are you being such a shit, Jimmy?"
"Sis, I heard a noise from your room. When I went into the bathroom, the noises got louder. You, yes You, left your bathroom door open so I saw you on your bed with Carmine. You were naked, he was naked, both of your hips were pumping and you're telling me that you weren't fucking?"
"We weren't fucking... we were... er...um... doing something else."
"Oh come on! If it wasn't fucking then what was it?"
Karen lowered her head for a moment and, without looking up: "I was giving him a cracker."
"A What?"