Owing to my father being downgraded in his job we as a family had to move to a smaller house, my parents found a half decent two bed roomed house, that meant I had to share a bedroom with my 8year old brother, me being 18 had certain needs, I would of used the bathroom but the way the house was constructed you could get access from either bedroom, I think they are called Jack and Jill bathrooms, so privacy was at a premium, what ever I wanted to do I had to try and do it when my brother was asleep, one night after he had been in bed for several hours I said good night to my parents and went to bed, I quietly got into my bed hoping to have a tug, I had worked up a great erection all of 7 inches which I was really proud of, I was slowly stroking my cock when all of a sudden a little voice piped up what are you doing?? I was startled and my erection deflated, I tried to bluff him by saying I had an itch and was scratching, he was having none of it, I saw you playing with your willie as he called it, I was busted, don't tell mum or dad I said as it is personal, he asked if he could see my cock! Why I said, it looked like dad's just now he said, so I sat on the edge of the bed and dropped my briefs, he seemed really interested in the amount of hair I had around my cock and on my balls, can I touch them he said, gently then I said, he gently lifted my ball sack and said they are heavy, with him holding my balls my cock started to stir slowly getting erect again,he was mesmerised as it grew to it's full length, what were you doing to it before he said, trying to find an answer I told him when boys get to my age they had to drain of some fluid or their balls got too big, he asked me to show him how I did it, so I started to wank again slowly I was pulling my foreskin over my glans and this enthralled him, soon I was at the point of no return,I started to tremble then shot a huge wad of cum onto the floor followed by several more, after I was spent I cleaned my self up, he was wiping the cum up with some tissue and said it is very sticky, afterwards he said when will I be able to do that I said not for a few years but you may get hard, can we try he pleaded, so I had him stand in front of me, I pulled down his little briefs exposing his little dick and tiny ball sack I started to roll his little dick in my fingers, and lo and behold it started to stiffen it grew to the size of my second finger but it stood proudly up, I didn't try to retract his fore skin I said that was for another time, I was hard as a rock again with playing with my brothers dick, he asked if he could stroke my cock for me, so I let him toss me off to another massive orgasm, I have no doubt we will be doing this a lot in the future