We had to move to a smaller property after my father was downgraded from his job, my parents found a half decent two bed roomed house, the only problem is I would have to share a room with my 8 year old brother, I am 18, privacy was going to be a big issue, and at 18 we boys have needs, the bathroom was a no goer because it was a Jack And Jill construction making access from both bedrooms, I usually had to wait till my brother was asleep before doing anything, one night I assumed he was asleep so I pulled down my briefs and by the glow of my bedside light I started to wank, I was well on the way when a voice piped up and said what are you doing???????? I was so startled my erection deflated, I tried to tell him I had an itch and was scratching but he was having none of it, so I told him when boys get to about my age they had to relieve themselves or their balls would ache, he then asked if he could see me relieve myself, I said as long as he told no one as it is private, so I sat on the edge of my bed and worked up quite an impressive erection, my brother seem fascinated by the amount of pubic hair I had, asking if he could touch my balls, I said as long as you are gentle, as he lifted them he said they are heavy, and I was starting to pull on my dick, with him holding my balls I soon ejaculated loads of cum which shot out all over his pyjama top, he was so shocked as he never realised what was going to happen, I said I was sorry but he was cool about it, after we had cleaned him up, he asked when he would be able to do what I had done, I explained not for a few years, but I could probably get him hard, he was eager for me to try, I pulled down his pj bottoms and his briefs, I then played with his tiny penis till it started to rise,soon it was sticking up proudly the size of my second finger, his little wrinkly ballsack hanging there, with all this activity I was now sporting another huge erection, which my brother wanted to take care of for me, he was unable too get his hand around the girth of my dick, but with my help I had another massive orgasm, in future I do not think I will have to be so secretive in looking out for my needs