It had been little over a week since I had been given a blowjob by my sister, (see the story "Sister Online" at this site) and Trish hadn't come by at all. So I found myself back to my old ways of going around the net surfin' porn. I had been on-line little over hour when my monitor started flash. I turned it off and turned it back on, I read my user manual. Hell, I even swung by the IBM's website to see what I could do, but it all came down to the fact I was going to have to send it in to get serviced. Serviced, that meant two weeks without a monitor or the Internet.
After about a day without surfin' the net, I finally went to my sister and asked her if I could borrow her monitor, thus allowing her to use my high-end computer over her 486. She jumped at the chance and agreed to let me use her monitor until mine was fixed. So here I was sharing a computer with my bi-sister, all the while knowing full and well what she liked to do. It drove me nuts. Everyday she would come home from school and come into my room and demand to use my computer, I allowed her to and then an hour later I had to go to work, leaving her by herself in my room.
One day after I came home from a very shitty day at work, I noticed that the light to my room was off, but there was a glow coming from room. I walked to my door and peered in, there was my sister sitting in front of my computer with her shirt off. My eyes widen at the instant replay I was getting from barely two weeks ago. I stood there and watched as she clicked and typed and typed some more. My first thought was she was having cyber sex, but when I got a good look at the screen I saw that she was emailing.
The whole fact that my sister was in my room with her shirt off, was enough to give me a hard-on. I felt my breath getting shorter and shallower, as my mind flashed back to that fateful night. But instead of barging in the room and scaring the crap out of her, I quietly crept my way into my bathroom and shut the door.
After I had shut the door I heard the chair she was sitting on squeak as she turned to see where the noise was coming from. I took off my clothes and did my business, before I left the bathroom and looked in to see the monitor still on, and Lisa's shirt draped over the chair. I turned on the light and went into my room and over to the chair, not paying to much attention to anything else and picked up her shirt. I raised it to my noise and took a big whiff, "God she smells good," I said to myself. I took my seat and began surfin' the net, all the while visions of Lisa running out of my room without her shirt on danced in my head. I had been surfing around for about an half an hour, until I came across a picture of teenage girl, made out to look 15, wearing cut off shorts and nothing else. The pic reminded me of Lisa and I started jerking off. I was almost ready to cum, when I heard a noise come from my bed. I whirled around expecting to find the family cat, but instead I found my sister topless, and on all fours, trying to sneak out of my room. My face became blood red as I realized she had been in my bed the whole time, with a perfect line-of-sight at the monitor.
She was the first to move. She grabbed a near by towel and covered her breasts, while I shoved my still throbbing cock back into my boxers.
"Well I guess I had better go first," she said sheepishly.
"Well, it's like this... I have this guy I met in this chat room, and we kinda had cyber sex a couple of times, but when started this new job of his, he had less and less time to get on the net and cyber with me..." she said.
"Go on..." I encouraged.
"So, we started sending these erotic emails back and forth and tonight he was online... so we decided to... uh, catch up?"
I sat there for about five minutes trying to think of what to say next, but I couldn't think of anything. So I took a deep breath and said, "Well have you even seen a dick before?"
She stared at me and then started turning red from ear to ear.
"You mean...like a REAL dick, right?" she said with a smirk on her face.
"Well would you like to see mine?" I said with a slight quiver in my voice.
She said nothing for the longest time and just stared down at the floor, and nervously playing with her hair, until finally she spoke. "Why would you let me see your dick?"
"Well simply put, I saw you playing with your tits when I came home, I just didn't say anything about it. So since I saw your tits, I think it only right you see my dick," I said.
She then got up from the bed and walked over to me. She stood in front of me for what seemed like forever, when she let the towel that she was covering up with gently fall to the ground. I felt my dick swell back to life, at the sight of her breasts. She then put her hand on my crotch as she slowly knelt down in front of me. I was in heaven.
She took her left hand and pinched her nipple, making it swell up. I then reached down and pinched her other nipple, causing her to moan and slightly arch her back. I pulled my dick out and gently stroked it a few times before I let it stand erect and pointing straight at Lisa. She smiled up at me and started to stand up, when she then bent over and started to take off her boxers. I leaned my head back, allowing my mind to fully record every detail of the events taking place. She then stood in front of me completely nude, and then motioned for me to stand up. She put her arms around my back and pulled my shirt off, and over my head. We both let out a nervous giggle, as she turned her attention to my boxers. She put her right hand down the front of my pants squeezed by dick. I smiled and leaned my head down to her right breast and started flicking my tongue over her areola. She moaned in acceptance and then pulled my boxers down past my dick, letting them fall to the ground.
She pulled on my dick as I slowly made my way to her other breast. She then pulled away from me and went and sat down the bed. She then motioned for me to join her. Once we where both on the bed we became fully engrossed with each other's hot spots. She lifted my head from her breast, which were now glistening with sweat, and asked me, "Do you want to fuck?"
I raised myself up on my elbow and stared into my sister's eyes, and saw a very taboo fire burning there. I could always imagine fucking her, but doing it to her for real? Soon my mind was flooded with stores of incest babies, and my parents, until I final responded.
"I don't have a condom," I said disappointedly.
"You don't?" she asked with a raised eyebrow.
"No, I had a glow in the dark one, but I used it."
"Well, then no teen pussy for you," she said, shaking her head. "The night doesn't have to be a complete loss," I said, feeling my hard-on slipping away.
"Then what do we do?"
I smiled at her as whispered in her ear, "Mutual masturbation."
"What?" she asked.
"Cyber sex, in real time."
She smiled and rolled over on to her back and started inserting her middle finger into her pussy. She then started letting out these fake moans, over and over again, chanting my name, and pinching her nipples. It was more than I could take. I started jerking off right over my sister's firm breasts. Her moaning got deeper and deeper as she bucked her hips in rhythm to my masturbating. She then started moan,
"On my tits, OHHHHHHHHHH! MY TITS! CUM ON MY TITS!" I felt my balls tighten, and the precum flow out of my dick. I stroked for five more seconds and then shot my load all over my sister's sweaty young body. She bucked her hips a few more times, before she ran her finger up her now cum drenched chest, and licked the still hot cum off her finger. She smiled at me and climbed out of bed, grabbing her shorts and her shirt as she left the room. I fell down in heap on my bed, still recovering from the ordeal, when Lisa popped her head into my room and said, "Oh by the way, Trish is coming over next weekend, so let's not try this again.. until she leaves, okay?"
"Okay," I said, as I tried to fight back the smile that was crossing my face.