I used to live a pretty normal life. I lived with my parents and my sister. It wasn't until I hurt my back that I discovered a new way of living.

My sister and I are close in age and although we teased each other relentlessly, we also got along most of the time.

One day while I was out riding my bike, I was trying to perform tricks and I fell off. I hurt my back pretty bad, but my mother told me that I had just tweaked it and that I should lay flat on the ground to help alleviate the pain.

I tried it and it did seem to help. As I lay out on the living room floor everyone just kept passing by me like I wasn't even there. That is when I got my first glimpse up my sister’s skirt.

I'd never even thought of her sexually, until that very moment. My hormones kicked into high gear and from that day on I was hooked on peeking up her skirt.

I would constantly complain that my back hurt just so I could lay on the floor in the middle of the walkway. Luckily, no one realized the days that my back hurt always coincided with the days that my sister wore a skirt or a dress.

One day after school, my sister and I were home alone. She was wearing one of her cute little dresses so I told her that my back was hurting.

She watched me as I lay down on the floor in front of her while still carrying on with our conversation.

I now had a pretty good view up her skirt. I had to be careful not to stare directly up her skirt, but I also couldn't help but take quick little glances.

As I talked to my sister, I lowered my voice more and more. This caused her to step closer to me, in order for her to hear me better. This gave me an even better view up her skirt and at her silky panties.

As my sister was talking to me, she finally caught me looking up her skirt, “Oh my god! Are you looking at my underwear?”

She lifted the front of her skirt slightly to see what it was that I was looking at.

“You are such a pervert. I can’t believe you. I’m telling Mom!”

My sister turned to leave and as she did she pushed the front of her skirt back down causing it to lift up in the back.

“Wait!” I said.

My sister stopped in her tracks and looked back over her shoulder at me, “What?” she asked irritatedly.

“I will do anything you want if you don't tell on me! Please!”

I couldn't help but notice that her panties were wedged up into her butt cheeks.

“Anything?” she asked in a calm voice.

Almost as if reading my mind, my sister reached back and pulled her panties out of her ass while also giving me an even better glimpse of her exposed ass cheeks.

My sister turned back around and stood over me. She seemed to be less upset now but she had an almost evil grin on her face.

“Even now, as you beg for your life, you can't stop staring at my panties. Do you really like them that much?”

“I do. I'm sorry I can't help it.”

She then tucked her thumb into her panties, and paused, “Hmmm.”

“What if I wasn’t wearing any panties? Would that help you to stop staring up my skirt?”

My sister pushed her panties down to her thighs, exposing her pussy.

“I don't know. It might help,” I said as sweat beads formed on my forehead. My cock was now hard as a rock and prominently displayed in my pants.

“Okay. Let's give that a try then. No panties, to see if that will help you stop looking up my skirt,” my sister said as I continued looking up her skirt.

She then pulled her panties down as far as she could while still standing over me. She then turned around to leave but stopped when she saw the big bulge in my pants. She leaned forward to get a better look at it and asked, “What’s that?”

“That's what your panties and skirts do to me,” I answered.

My sister scoffed and started to walk away with her panties still around her calves when she stopped and turned back to face me. I sat up and rose from the floor and looked her straight in the eye.

“Wait,” she said, “You just said my panties and my skirts. Do my skirts and dresses turn you on and make you want to look up them?”

I didn't want to admit it for fear that she would stop wearing her cute dresses.

“Do you think that being able to see my tight ass under my dress might continue to tempt you to peek?” she asked, almost seductively.

My sister then turned around, lifted the back of her dress, and grabbed her ass cheeks.

‘What was she doing? Was she trying to tempt me or was she just that oblivious?’

She turned to face me and playfully tugged at the hem of her dress.

“So it seems that I can't wear panties, and I can't wear dresses, without turning on my perverted brother,” she said, as she blatantly looked at the large tent in my pants, “Fine then. No dresses either!”

Just then my sister grabbed the bottom of her dress and lifted it over her head. I was stunned. I couldn't say a word as my sister turned around and stuck her ass out at me.

“I guess this is how I will have to dress from now on. Is that better, brother?”

She grabbed her ass cheeks and pulled them apart, “Now that my ass and pussy are free, you have no reason to lay on the floor and steal peeks. You can look at me whenever you want.”

I nodded my head dumbly in agreement.

“But you promised,” she continued, “that you would do anything if I didn't tell on you... So strip! And lie back down on the ground,” my sister demanded.

I removed all of my clothes without complaint. When I got to my underwear I paused and looked at my sister. She smiled and nodded. I pulled my underwear to the ground and exposed my hard cock to my sister.

I sat back down and lay back. My sister then kicked off her underwear and stepped over me and stood directly over my head. I looked up at her and it looked like her pussy was getting puffy and wet.

“If you don't do exactly what I tell you to do, you will never see my pussy again,” she said, as she clamped her hand over her pussy, covering it from my view, “But, if you obey your sister, I will let you see my pussy and more. And right now I am so turned on that you are going to let me sit on your chest while I masturbate.”

My sister then proceeded to touch herself. She sat down hard on my chest and played with her pussy right in front of my face. I wasn't allowed to touch her, but she did let me jerk myself off while she was masturbating.

I watched and smelled her as she ran her fingers through her slit. She rubbed the outside for a minute and then pushed her fingers inside herself, “Mmmm,” she moaned.

Then she pulled her fingers out of her pussy and held them in front of my face, “My fingers are dry. Open your mouth,” she demanded.

I opened my mouth and my sister put the fingers that were just in her pussy, into my mouth.

I closed my mouth around them and sucked the sweet honey that her pussy had deposited onto them. It was my very first taste of pussy and I loved it. She let me suck on her fingers until all of her juices were gone.

Then she pulled her fingers out of my mouth without warning and pushed them back into her cunt. Her eyes closed and her head rolled back.

I was jerking my hard cock as I watched my sister's fingers lunge in and out of her wet hole. I imagined what it would feel like to have my cock do the same.

My sister reached up and played with her nipples. She pinched and pulled at them causing them to grow and harden. I was mesmerized by the sight in front of me. I stroked my cock and felt my orgasm fast approaching.

“That's right. You have to just sit there and watch me fuck myself,” my sister spoke with her eyes still closed, “You're being forced to watch me CUMMMM!”

My sister shouted out the last word as her body shook and her legs clamped together. Just then my cock exploded and I shot cum all over my sister's back. It was the single greatest orgasm I had ever experienced.

After sitting motionless together for a minute, my sister's eyes opened and she smiled at me, “Your perverted little secret is safe with me. For now.”

My sister took her fingers and pushed them into my mouth again before I could even react. I grabbed her wrist and held it in place until I could finish sucking and licking them clean.

Once I let go, she rose to her feet and walked away. The ropes of cum stuck to her back as she made her way to the shower.

Now that we have an understanding, my sister and I have had a lot more adventures together, all thanks to getting caught looking up her skirt.

My sister was eventually able to get mom on board with our nudist lifestyle so we didn't have to get dressed before she came home.

And with Mom's permission, my sister “convinced” Dad to join in the fun, too.

The End