My little sister Kara was a pesty pain in the ass when we were growing up. We fought constantly about the stupidest things. But as we grew a bit and both moved into puberty, we enjoyed a friendly sibling rivalry. We were the only two kids in our family and always seemed to compete for the most attention and accolades from our parents. If I got a good grade in school, she would scowl about it and work to beat me the next time around. If she won an award running track, it would motivate me to try even harder to do better on the basketball team. We kept each other motivated, taunting each other with each other's latest conquest. Looking back on it now it was all quite silly.
Being competitive with each other built a mutual respect despite our constant arguing. I certainly grew much fonder of her as she matured and her self-confidence grew. It almost seemed like over-night she had blossomed into a beautiful girl. By the time she reached her senior year in high school, she no longer felt like she had to prove herself to anyone. I was one year her senior and it's always good to have a big brother to stick up for you.
Kara was 5 ft 8 inches tall and weighed about 130 lbs. She had toned legs and wonderfully textured skin that always seemed to keep a tint of color, never pale. At age 18 she had 36c breasts. But to me her most prominent feature was her perfectly rounded ass! God, I swear I spent hours on my summers home from college laying in bed late at night fantasizing about grabbing and licking that ass of hers. I had felt guilty about it at first, but as time went on she transitioned into much more revealing clothing. She had caught me a few times staring at her ass and I was sure that she liked the attention.
One night while our parents were out on a date, I was sitting on the couch watching TV. It was getting late and I could hear the shower going downstairs as my sister got ready for bed. Several minutes later she came up stairs in a low-cut silky pajama top with matching bottoms that were very short and hugged her ass tightly. I had never seen her wear it before and my mouth must have gaped open as I stared at her. I watched her as she walked to the sink and out of sight. Although I would never plan to bed her, I couldn't help but look every chance I got.
I heard her stop in her tracks and take a few steps backwards, back into sight. She looked at me with her sassy little smile.
"What's wrong Jason? Trying to catch flies with that mouth?" she playfully asked with a big sheepish grin. .
"What?" I asked, looking up at her and trying so hard not to let me eyes roam her body. "What are you talking about?" I wasn't about to admit it to her. She would have liked that too much.
"What, isn't your Sandra giving you any?" she joked, sticking out her tongue like a little kid and wiggled her ass at me. It was true. I had been dating Sandra for just a few weeks and we hadn't had sex. I had been pretty frustrated about it as my hormones had definitely been racing, especially with my sister constantly showing off her eye candy.
"Shut up Kara!" I reacted angrily. "If you'd wear some modest pj's that didn't make you look like a hooker, I wouldn't look!" She seemed surprised by my angry retort and could tell she'd hit a nerve.
"Oh, poor baby." she mockingly whined. I jumped up from the couch after her and she giggled and darted for the stairs. I got there just in time to give her a good smack on the ass as she raced down to her room, laughing.
Later that night I was laying in bed, beating off to the thoughts of my sisters' hot little body. My eyes were closed and I was imagining in my mind what she looked like naked. My mind wondered her body, seeing her perfect tits. Her tight ass. Did she have a hairy pussy? Just as I was about to cum, I opened my eyes and the tiniest bit of movement caught my eye at my door. Everyone was asleep, I had thought, and failed to close it all the way. The shadow moved away quickly. I wondered if my sister had been watching me and that thought brought me to the brink. I shot my load and let out a big moan. The next day, there was no indication that my sister had seen me and I decided it was nothing.
Anyway, a year later I was in college and dating one of my sisters' older friends. Her name was Cassie and she was a real knock out! She and my sister had met in her biology class the year prior and brought her over to study one night. She was one of the most beautiful creatures I had ever seen. She had a classic, sweet "girl next door" smile. Her tits were not quite as big as my sisters; a 34b. She was also just a little bit rounder. She was 5 ft 5 inches and 145 lbs. Cassie also had a super fine ass that gave me an instant boner the first time I saw here. From then on I would hang out around the house when she was over just to get a good glimpse of her and flirt a little. A few weeks later we were dating and she and my sister became even better friends. When Cassie & I weren't together or if I was at basketball practice, she was hanging out with my sister. They became best friends.
A few weeks after we started dating Cassie & I had sex for the first time. To my surprise and every wet dream come true, Cassie lost the girl next door reputation when we would fuck. That girl wasn't afraid to try anything and once we fucked the first time, she wanted it all the time! Man, it was every boys dream come true! Not only did we take the opportunity to fuck often, she would get more and more daring; like doing it at the park and inside a phone booth at the pier. One-time she talked me into doing it in her room when her parents were home. I was scared to death and she was always pushing me passed by comfort limits, but the thrill really turned her on and who was I to say no? Although it was risky and time and worried me from time to time, it was a real turn on for me too.
She was awesome! And to a 19 year old boy who had been a virgin up to that point, it seemed like she did it all! She'd suck my cock, let me do her from behind and allowed me to discover that my favorite part of sex was giving it to her up the ass! After I fucked her ass for the first time, I became much more worried that she would tell my sister the things that we did. Even though my sister and I had been cool with each other lately, I was afraid it wouldn't take much for my sister to get me into trouble with my parents the next time we had an argument or think that I was some kind of sex freak.
"What are you worried about?" Cassie asked. "Kara is my best friend and anything I tell her in confidence would stay that way."
"Look, she's my sister and I really rather she not know all the stuff we do, you know? Besides, it wouldn't take much for her to use it against me with our parents." I'd say.
"Relax Jason, I won't tell her." But I just wasn't sure and the way she said it didn't convince me. So, I just stopped worrying about it and enjoyed the ride!
One weekend our parents went out of town and I was home from college, leaving Kara & I to our own devices. To me that meant I could bring Cassie over get to fuck her in my own bed for the first time. For Kara, it meant she could sneak away over night without my parents knowing and could go to a popular bar over the state line with some of her friends, which allowed under aged drinking. My sister was a bit of a lush and had taken a swig out of my dad's liquor cabinet from time to time, but nothing serious. I think she was just looking to blow off some steam.
About an hour after my folks left Kara had her bag packed and was heading out the door. She was wearing a tank top that showed off her young, ample tits and a mini-skirt that didn't leave too much to the imagination. I couldn't help but wonder is some lucky guy would get a piece of that tonight.
I picked up the phone and called Cassie. She was there soon after and we wasted no time getting down to business. Cassie was super sexed up that night for some reason and took our time fucking in every room of the house! We started in my room, then the living room, on my parents' bed, in the kitchen and on top of the washer & dryer. It was exhilarating for us both to be able to just walk around the house naked, fucking freely and like rabbits! I felt so naughty and seemed to turn Cassie on even more than me. It was an exhibitionist's fantasy come true!
I had Cassie on the dryer, my hands under both sides of her ass, holding her up just slightly. I was pounding her pussy as hard as I could and she was getting louder and louder by the second. Sweat poured down her chest and onto her tits. I licked her nipples, which stood straight up like erasers when I would.
"Oh YES! Fuck me like a slut!" she screamed. I loved it when she talked dirty. I grabbed her ass even tighter and hammered her sweet pussy like a mad man. We both came simultaneously with intense orgasms.
She leaned against the wall and I on top of her, both of us gasping for air. It amazed to me know how long we could fuck for. I looked at the clock on the wall and it had been 2 hours since she walked in the door and dropped her shorts, exposing the fact she had not panties on.
We rested for a few minutes. The sight of it all; her breasts heaving as she was catching her breath, her hair matted to her forehead with sweat. I looked down at her sopping wet teenage cunt. Cassie had a well trimmed pussy and right now, it was dripping with my cum. My dick started to get hard again. She looked down and saw that my 7 inch cock was starting to grow again.
