Being 19 and living at home isn't easy, but I am sure you all know that. I want to wank all the time and would do if my 2 step sisters weren't always hanging around the house.
My Dad married Cleo when I was 3, and she bought her 2 daughters to the family. Megan was 5 and Tara was also 3 and we all got on OK in our new family.
As I developed into manhood I started to notice that Dad had married a honey. Cleo was about 5'6", leggy and very busty with blonde hair. If you didn't look at her face she was a model, but the very prominent teeth and the acne scars made her face a novelty rather than a beauty.
I took every opportunity too see her in the bath room, or changing in their bed room and over the next few years saw a fair share of large breast and creamy white bum. Many a night I rubbed my hard cock as I imagined grabbing those tits.
My step-sisters knew I fancied their Mum and would often tease me that they had been in the bathroom with Cleo or had sat on her bed as she dressed and they told me about the frilly underwear she had put on. These stories provided wanking material for me and believe me I did it a lot.
One day, almost like a lightening bolt, I suddenly noticed that Megan was stunningly attractive and Tara was blossoming into a replica of her Mother, buck teeth and all. I had never observed the privacy the girls wanted and used to burst into their bed rooms unannounced and often caught them dressing. I didn't see any reason to stop now even though Megan shouting "get out you wanker, I'm bloody naked" would bring my father running to see what had happened.
I received the usual talks about respecting the girls' space and that I needed to understand that they were women now. I knew damn well that they were women and that was the reason for my almost daily intrusions into their bedrooms.
Things soon changed around the house, Megan had gone off to college and that left Tara and I alone a lot of the time as Dad and Cleo thought we could look after ourselves and they took every opportunity they could to spend nights away from home.
One such night, it was my chance to have a shower as Tara had finally finished with the bath room. I went into the room and the first thing I noticed was that she had left the knickers she had worn all day on the bathroom floor. I shut the quietly and stood there for what seemed like hours, but was only seconds. I picked up my step sister's underpants and was immediately aroused by the silky feel of them and the thought that only some 30 minutes ago these were covering her pussy.
I draped her knickers over my hardening cock and they felt light and smooth on my circumcised cock. I knew that it would fell better if I wrapped the panties around my cock and rubbed them back and forward. Doing this slowly felt fantastic and the more I did it the harder I got. Just as it started to occur to me that I had my sister's panties wrapped around my cock, and I felt the blood rush to the head of my cock, the bathroom door opened and in came Tara. As the door flew open she said "I'm not looking I just need to grab my knickers, I think I left th...... What the fuck are you doing with my knickers?"
I stood frozen to the spot, unable to move and unable to speak. This was the worst possible situation I could imagine, Tara standing in front of me looking down to see my swollen rock hard cock encased in her panties that I had been rubbing up and down the shaft like a demon.
Tara reached out and grabbed them and as she did her finger tips brushed the head of my cock and it spasmed involuntarily. I died inside and slammed the door closed as she turned and left the room. I had my shower and wondered how I would ever look at Tara again.
After my shower I slinked into my room and closed the door. Although I was horrified at what had happened I couldn't help but rub my cock slowly as I remembered the feeling of the silky panties on my cock.
I noticed my door open a fraction, and before it closed the same panties I had in the bathroom flew into my room and the door closed. I sat for a while and stared at them lying on the floor wondering what to do next. My erection made the decision before my brain could think about it, and I grabbed them and felt the material in my hands.
I lay back on the bed, closed my eyes and again wrapped the panties around my throbbing cock. I really got involved with what I was doing and stroked the material up and down and thought of Tara knowing exactly what I was doing.
