The best sister ever

From birth I have always had a thing for my youngest sister.She pranced around the house like an angel and the day everything changed is when I was 10 and she was 11 and we were both home alone. She was "old enough" to look after me according to my mother and my parents left for thier meal out and they would not be back for some hours. Well my sister was a petite blonde who is 5ft 7in with a nice set of perky breasts to match.After we ate our dinners my sister announced that she was having a shower and I said "ok then im going to play Fifa 2004" and she proceded to go upstairs. I heard the water start in the bathroom and starte playing my game, after 2 minutes I started to need to go to the toilet.

I decided that she would be so busy washing herself she wouldnt notice that I was in there. So i opened the door and had a quick peek into the bathroom, (no locks on the bathroom door) I quietly snuck to the toilet seat and took out my cock and pissed quickly. I finished up and started to sneak out of the room when y sister stopped the shower water and stepped out very quickly. In a flash of a second i was downstairs before she put her second foot on the floor but when I got back to my playstation I had noticed that her towel had got caught on my belt while I ran away.

In no time at all i heard a huge shout coming from upstairs and she yelled my name and I quickly ran upstairs as if I were innocent. I went into her room and she was just sitting there naked, my cock went instantly rock hard before my jaw dropped. "Gee if you wanted to see m naked you could have just asked kiddo" and I could not answer my jaw was still on the floor when she stood up. My jaw broke through the floor when I saw her cock swinging from side to side.

She went up to me and said "how big is yours kiddo","erm about 5in hard, how big are u sis". "why dont u find out u little perv, come on u could hav just jumped into the shower if u wanted some fun. From that point on it was too late to back out and I just nodded and eventually plucked up the courage to say "why not have some now mum and dad are'nt at home for another 2 hours at least".With that said I got naked in front of my sister thanking god for such a moment.