She smiled. “Well, it is a little unfair, you know. You get to show off your chest all the time and I just have to take it.”
My eyebrows knit together in amusement. “What do you mean? Girls don’t get turned on half as much seeing a guy’s chest as the other way around.”
Jen rolled her blue eyes. “Oh yeah, girls are oblivious to all that!” She teased in a sarcastic voice. “Well I get turned on when I have to see you like that every morning!” She said, poking me in the chest and punctuating it with a quick poke to my ribs where I was ticklish. She giggled as I jumped at her touch.
“Well what then? I’d just assumed you wouldn’t want me to see you like that.” I said, then tickled her on the neck, making her squeal.
“Mark, I don’t care! They’re just my breasts! I’d much rather be allowed to be as proud of them in front of you as you are with your chest.” She said.
I’ll be honest. I didn’t quite believe her.
“Okay,” I said, backing off, “I’m fine with it if you are. But we’re still not walking around naked in front of each other, are we?”
She laughed and the tops of her breasts jiggling as she continued to cover them.
“No!” She said. Her eyes twinkled as she continued, “Unless I really get into a mood!”
We laughed and I shook my head, not believing her candor today. The game had really put her in a good mood. I left the bathroom and gave her the privacy to enjoy her shower and began working on an assignment from work on my computer.
In the back of my mind I heard the water from the shower stop. A few minutes later, Jen knocked on my door. I got up from my desk and grabbed the door handle and pulled it open.
The sight that lay before me was nearly surreal in its beauty. Jen stood there in the doorway. The light from the bathroom was shimmering through the steam that had filled the bathroom from her shower. Her dark hair hung in damp strands down her shoulders. She was topless, her breasts completely bare to my eyes. Her white towel was wrapped around her waist and her hands rested on her hips. She had a teasing, proud look on her face as she watched my reaction. Beads of water still dripped from her hair and her rosebud-hued nipples began to contract and grow firm from the cool air of my bedroom. She looked at me demurely and raised a hand to casually pull her hair back behind her ear, then rested her hand again on her hip.
“So, are you hard?” She asked.
My heart skipped a beat. “Um, yes. Like a rock.” I told her.
“Good.” She said and smiled. “That’s how you make me feel every morning when I see you like this. Understand?” She asked.
In astonished amusement, I said, “Yep. I think I do!”
“Good.” She said, acting like she had won a trial.
“One thing though.” I said and motioned for her to come in. She walked a few feet into the room, her breasts swaying gently, and I came up to her. “Aren’t you afraid that I might do THIS!?” I said and stuck my fingers under her arms, tickling her.
She screamed and laughed, struggling to get away, her breasts jiggling and bouncing as she pranced and fought to get my hands away. In a flash, she got a hand under my arm and tickled me just as hard, making me loose my grip with an arm. We laughed and wrestled against each other, trying to get the upper hand. Her breasts mashed against my body, leaving wet prints on my shirt. Her hair also slapped against my body once or twice when I got her really good and she swung her head, laughing hard. I went after the sensitive area near the base of her neck, but she got to my ribs and I flailed and nearly threw her backwards toward the bed to get her to stop. She fell back onto the mattress and I reached down to help her up. She surprised me and grabbed my hand and pulled hard, making me lose my balance and tumble onto the sheets as she escaped. I was on my side and she didn’t waste any time tackling me from behind and going at my ribs again. I dimly registered the cold wetness of her hair on my shoulder and her breasts on my back as I tossed and turned to get free. Finally I got her arm and pulled her right over me. She tumbled over in a mass of hair, flesh and towel and I quickly got her pinned.
We lay there, laughing and breathing hard, staring at each other’s faces. Her hips were twisted slightly to the side but her upper body laid flat on the bed. I held one of her arms up beside her head and had the other one pinned between our stomachs.
She giggled. “You’re digging into my hip.” She teased.
I realized she was right, my strong erection was pressed pretty firmly against her. I raised my eyebrows at her and said, “Oh well. Your breasts aren’t exactly hiding from me either.”
She grinned. “You don’t get it Mark. My towel came off.”
“Oh.” I said, “I couldn’t tell through my jeans. I’ll let you go if you promise to behave”
She nodded and I let go of her hands. I moved my body off of her and turned around so she could cover up.
“Hey Mark?” She said.
“Yeah?”
“I’m really turned on.” she confessed.
I grinned. “Me too.”
“Do you want to do what we did yesterday?” She asked.
“Are you serious? I was really surprised.
“Yeah! Can we?” She said, excitedly.
To answer her, I took off my shirt. She squealed happily and made room under the covers for me. I got under the sheet and got my jeans undone and worked them free, then slid off my socks and briefs. I couldn’t even begin to explain the excitement I felt being under the covers, naked, with my sister.
She smiled at me and turned over onto her stomach and pulled her wet hair to one side. I lifted my leg to climb on top of her and felt a thrilling shock as our naked skin touched. Her body was so smooth and hot. I felt my body hair rub over her hairless skin and realized we both had goose bumps. I got my chest over her back and dropped my dick down on her butt. She giggled and squirmed, moving her butt around and working my dick between her cheeks. I put my arms around hers and held my chest slightly up so she could breathe.
“Oh yeah, I really like this!” Jen said, then pushed her butt against me even more firmly until I was burrowing through her crack. I drew my penis back and slid it forward. Her butt was slippery from sweat and water from her hair and she squeezed herself around me tightly. I drew back again and slid forward, and continued stroking myself against her body.
Jen moaned lightly, smiling as she felt me slipping between her cheeks. She spread her thighs apart more and got her knees under her to raise her hips up. I followed her lead and pulled my knees up under me as well. When I had lifted my upper body off of her back and was now on all fours above her, she lifted her butt all the way up to meet my throbbing dick. Since only her lower body was raised and she still rested her head and chest on the bed below, her pussy was more fully exposed and available to my penis. She pushed firmly against me and I slid my shaft again between her cheeks, feeling my balls come to rest against the wet warmth of her cunt. I stroked myself through her, feeling her squeeze the muscles of her buttocks tight around my shaft.
She moaned again, then looked up at me and said, “Go lower!” and grinned.
I complied and began sliding my dick against her wet cunt. She was definitely even more excited than the night before. Her vulva was nearly sopping wet by now and we both laughed quietly at the sounds we could hear as my penis sloshed through her tender flesh. I pumped and pumped against her, relishing the feel of her body heat. I began to smell the aroma of her body’s cum and it continued to grow steadily, adding to our excitement. I began focusing the head of my penis on the edge of her cunt where I could feel the hard nub of her clit poking through the hood of her cunt lips. Jen gasped and her hands gripped the pillows under her as her thighs began to tremble. I made short strokes against her clit and could feel more fluids seeping down out of her vagina. Her legs began to shake and her hips began to buck as her body dealt with the rush of impulses being sent out from her clit. Her back grew wet with sweat, her face grew red, her fingers tightened their grip on the pillows and her knuckles grew white. I heard her toes crack as she balled them together tightly.