I come from a small and not particularly close family. Each of us seemed to grow up and go off in different directions without ever really getting to know one another. My sister is 7 years younger than me so at a young age that distance seemed a lot. When I was a senior in high school she was still in grammar school and so it went. As a senior I was on the varsity football team, middle linebacker, and for some reason my sister decided it would be cool to see her older brother on a team that was the talk of the valley. I found out years later that it was her girlfriends who thought it so cool to actually know a senior who was also on the football team. I had to admit it was nice that one person from my family actually went to some of my games. Both my parents worked Saturdays so it wasn't something they could do. It did bring us a little closer and I, for the first time, thought fondly of her. Before that she had been "the brat." She did admit years later that she knew she was a brat and prided herself on it.
So I went off to college, graduated and ended up back in my hometown. I didn't see as much of my family as I should have. My mother insisted I come to Sunday dinner frequently and I usually accepted and then she'd get me to come by for supper on the odd night. By this time the only person left in my house, my brothers having vacated and moved away, was my sister. She'd always ask me who I was seeing and why wasn't I working out and that I was getting fat. That wasn't true but she loved to needle me just the same. I liked that she did that and we seemed to get closer as time went by.
Erica, my sister, turned 18 on February 22. Being the only girl my father spoiled her to no end and she played on it as well. I told her she was shameless and she'd say, "yeah, so what's your point?" So she planned this huge birthday party to celebrate her coming of age, as she put it. I think it was just an excuse to drink to excess legally for the first time. That was not long after the drinking age had been lowered to 18.
My parents wanted to go away that weekend on a skiing trip to Killington Vermont and asked me if I would mind chaperoning the party. After a lot of hemming and hawing on my part I reluctantly agreed. "Why doncha bring a date!" Erica said sarcastically when she realized our parents weren't backing down on my being there and she would have the house to do with as she pleased. Not that I could have done so but I couldn't think of a worse place to take a date so of course I declined as politely as I could.
My mother called that Friday to give me all her last minute instructions which were fully a repeat of what she had said before but that was mom. They were off and my Saturday night was being killed by my kid sister at least as I saw it.
I got there a little early, about 7 as I remember. "Jack, do you think this is enough?" Erica asked motioning to the bar area. Oh yeah, I'm Jack, obviously.
"I think you could easily serve the whole town with what you've got here!" I said. "How many are coming anyway?"
"I dunno, maybe 30?"
I moaned, "Oh god, I hope you didn't put this out like it's going to be a kegger or something."
"No! Of course not. Mostly my girlfriends and their dates."
That wasn't a particularly reassuring statement to hear. Erica was very popular and I figure half the high school would be in on this. As her guests started to arrive and after a few awkward introductions I told Erica I'd be up in my old bedroom and to try to keep things under control. My breaking point was when one of her 17 year old girlfriends called me hot in what she thought was out of earshot. While it may have been a compliment it wasn't quite what my 25 year old ears wanted to hear.
As the night wore on I checked in on the party about once an hour. It was obvious most of them were getting pretty drunk but they weren't destroying the house so I didn't see any reason to apply an restraints.
It was a little after midnight when I went back down and saw most of the people were gone. Those left seemed particularly intoxicated.
"Erica, I think the party is over," I said in a low voice in her ear.
Erica had thrown her arm around me and slurred, "You might be right."
There were two couples left and both seemed extremely trashed. I told them I didn't think it wise for any of them to be driving. I expected an argument but surprisingly got none. Since there were three bedrooms upstairs, not including my parent's bedroom which I considered off limits, I suggested they stay the night there, girls with girls and guys with guys. I got a little moaning about that but none of them were up for arguing and it was easy to settle them in. The problem was, one of the bedrooms was Erica's and as we left there she said to me, "So where do I stay hot shot?"
Erica was still holding onto me to keep from falling down. "Well," I started, trying to think of a good answer. Suddenly Erica was dead weight in my arms as she seemingly passed out. Not knowing what else to do I took her to my room and put her in the bed. I considered, briefly, taking her dress off but then decided it was probably dirty from the party anyway and so her sleeping in it would be of little consequence. I got her into the bed, not easily, and got her to lie on her stomach. I stripped down to my underpants and undershirt, my usual sleep attired, and crawled into bed next to her. I was very self-conscious about how we were but tired quickly overtook me and I was asleep.
As I started to wake up in the morning I quickly became aware that I was in someone's arms. My mind quickly went from who did I come home with to oh shit it's Erica. I could see she was still in her dress and she was resting peacefully. I couldn't help but smile as I looked into her face and thought how sweet she looked.
But then I noticed something I hadn't before. Erica's body is one I'd call cuddly if I were looking at her as someone other than my sister. As such her breasts were full and now quite noticeably pressed against my chest. And that was all it took for me to become a little aroused. Something inside me screamed to push her away but another side said I should just let her sleep and get over myself. Well, I did the latter, somewhat. I tried to push the thoughts of how she felt against me with thoughts of a woman at the office I had the hots for. So I was replacing one erotic thought with another which of course turned out to be a very bad idea. I became more aroused instead of less.
It was just about then that Erica stirred and I could see her eyes start to open. She didn't move otherwise. As her eyes opened I could see in them her starting to realized her situation. But instead of protesting the first words out of her mouth were, "oh my fucking head!"
Escape! I had the perfect excuse now. "Okay, you stay there and I'll get you some Alka Seltzer!"
"No!" She protested. "Don't move, it hurts too much." I didn't understand what she meant but wanted to appease her. My sister had a sharp tongue and I expected some sort of a tongue lashing for our being in bed together. So far that hadn't happened.
We lay there quietly for a few minutes when Erica suddenly asked, "Jack, are you naked?"
"Of course not!"
I felt Erica pat various portions of my body to check that out and then said, "Good, I thought maybe you were perving me."
I protested what she said and we went back and forth about that for a few minutes. But during that time I could feel her body moving against mine and in particular her breasts moving over my chest a little. I love breasts and even though they are my sister's breasts it still turned me on. But so far Erica hadn't noticed but then she moved in one particular direction that brought her thigh in direct contact with my cock.
"Oh! What have we here!" Erica said.
