It all started when I was 14. I have two sisters who were then 16 (Sue) and 18 (Lori). When I started masturbating I would think of them and sometimes my mother who just turned 40. I was always hoping to see them in the nude. We each had our own bedroom upstairs and shared the same bathroom. Our parents had a bedroom downstairs with an in suite bathroom, so they had more privacy then us. Whenever a sister was showering I would open my door and hope to catch them going back to their room, but they always had a towel wrapped around them.

One day I came home and one of them was showering and when I heard the shower turn off I waited a few minutes and opened the door and Lori was standing there completely nude. I stood staring for a few seconds and said oops sorry and shut the door. I sat in my room visualizing Lori nude and thought about masturbating, when there was a tap on my door. Without waiting for me to say, come in she entered with a towel around her.

I muttered an apology for walking in in her. She said I think you did it on purpose, but it's no big deal, Your not a little kid anymore and I guess your teen hormones are running wild and having two sisters to ogle, I guess I should feel flattered you think of me that way when you masturbate. She dropped her towel and said I don't mind you seeing me nude, just don't get any idea about touching me. I sat there stunned as my cock sprang up. She noticed and said I'm not going to stand here and watch you jerk off, so I'll let you take a picture of me, if you promise never to show it to your friends or let mom see it. She let me take three pictures, one standing, one relaxing on my bed, and one sitting on my chair with her legs slightly spread. When she left I took off my clothes and lay on my bed where Lori had laid naked and masturbated shooting a big load of cumm all over my stomach.

For a couple of months I enjoyed looking at Lori's pictures on my computer as I masturbated. Lori never worried about covering up going from bathroom to her bedroom and I got to see her a few times. One da I heard Sue ask her how come she never worried about Kenny (me) seeing her. Lori said I'm sure he enjoys it and he's our brother so I see no harm. I was going upstairs one day just as Sue came out of the bathroom completely nude and when she saw me she started to cover up and said oh what the hell you may as well see us both nude. There's not much difference.

Sometimes they never shut the bathroom door when they showered and I could see them through the frosted glass and noticed Lori seemed to be spending a long time rubbing her pussy, as I wondered whether she was masturbating. They didn't mind if I came in to pea while they were in the shower, and I would stand there looking while I stroked my cock. They spent so much time in the bathroom I had to go down and use my parents sometimes. I think sometimes they paraded around nude just to get me aroused knowing I'd be jerking off.

Sue walked in on me purposely one day to catch me masturbating and Lori's picture was on my screen. I quickly clicked the pictured off and covered up. She said who was that and reached over and clicked back on. O my god it's Lori. She let you take her picture nude knowing you'd be masturbating to them. I said don't tell her you know. She shocked me when she offered to let me take pictures of her. She stepped out of her shorts and removed the tee shirt she had on as I stared at my nude sister. I took several pictures of her with a boner pushing out of my shorts. She sat on my bed and said before I go I want to watch you masturbate. For the first time a girl was going to watch me as I masturbated looking at a girl in the flesh and it was my sister. As I released a load of cum Sue looked all flushed and grabbed her clothes holding them tight to her pussy and ran to her bedroom. It's a good thing Lori wasn't home, she might have wondered what we were doing.

As I approached my sixteenth birthday I wasn't masturbating quite as much and my sisters never went around nude as much, but I still liked looking at their pictures and wonder if I would ever see my mother nude. Our mother never came upstairs much as My sisters looked after their own rooms and cleaned the bathroom. I kept my room as neat as I could, and changed my own bedclothes. Mom would come up to check my room out once in a while and do some cleaning.
She came up one day and said she wanted to have a talk with me. She said she was up cleaning my room and I'm embarrassed to say I turned on your computer and saw the pictures of Lori and Sue. They look like they were taken a couple of years ago and I assume they let you take them. So knowing you masturbate I guess your looking at them when you do. And don't tell me there's anything else going on between you and your sisters. I said no we've never touched.

Thank goodness for that being your sisters and besides I think your too young to be having sexual relations at least until your eighteen. I told your father you had nude pictures of your sisters on your computer. He first seemed shocked , but then smiled and said I wish I had sisters to think about while I masturbated as a teen. I thought about my mom and aunt, who I lusted after. I don't think we'll worry about it and he'll grow out of it some day as I did. Your dad wondered if you thought of me that way and would like my nude picture. I said why would Kenny be interested in an old broad like me. He said you still look pretty good to me, and I think most young boys think of their mothers that way. I'll bet he'd love to have a nude picture of you on his computer if you don't mind competing with your daughters. I told mom I'm glad your not mad and I'd love to have your nude picture.

A few weeks later I was down in the kitchen getting a drink, when mom called me from her bedroom. No one else was home and mom was sitting on the bed in a bathrobe looking like she just came out of the shower. She I said I keep thinking about you wanting pictures of me to put on your computer with your sisters and I know I can't compete with their young bodies I'm willing to let you with your father's permission. She said go get you camera before anyone comes home.

I came back and mom took off her bathrobe and stood before me naked as I stared at her too nervous to move. She said are you just going to stand there start clicking, before I change my mind. I said gosh mom your so beautiful as I realized my erection was pushing my shorts out. I took her picture standing, sitting and lying on her bed. She said that's enough as I noticed her staring at my shorts. She asked did I do that to you. I said yes and don't get mad but when I'm eighteen I hope to fuck you. She grabbed her bathrobe and put it on and said you better go to your room and look after things and not think about fucking your mother. I went upstairs and watched a slideshow of my mother and sisters as I masturbated, thinking that one day I would fuck my mother.

For two years I waited, going out on a few dates, making out, fondling boobs, and feeling pussies and making a girl cum sometimes and having a girl masturbate me, but never having my first fuck. My mom once told me I should wait till I was eighteen and when I jerked off to my mom and sister's pictures wondered if it might be one of them. A week after my eighteenth birthday I had my first fuck and a lot more. It was a wonderful experience and I was lucky to have a member of our family as a willing partner. That's another storey. I never had time to edit this. Sorry for any spelling or grammer errors.