I am a twin. My brother and I had done everything together as long as either of us could recall; we were so close that one could penetrate the other's thoughts so well that we could predict the words soon to be spoken by the other. Naturally, we both began masturbating about the same time. I had begun at 11 as had my brother unknown to me, but I felt this was the first thing I had to conceal from him. He felt the same way. Why I didn't realize this I don't know. About 6 months after beginning, I began to ejaculate although I had been having dry orgasms all along.
After our 12th birthday when we were home alone, my brother suddenly asked me to go to the bathroom with him. I followed him; he took off his clothes; lay on the floor with a towel on his chest; and began to stroke his penis, all without saying a word. After about 10 minutes of this, he had a good orgasm with sperm flying all over the towel. Then he said to me, Let's see what you can do. So I disrobed, and produced my orgasm for both of us. Afterward, he said I knew that you have been jerking off for the last 6 months, why didn't you say anything? I thought you wouldn't like it, I said. You should have known better, he replied. I can read your mind. I knew it when you jerked off the first time in bed the night mother spanked your behind for breaking old man Smith's front window. How did you know that, I asked. I got a big hard on myself, and jerked off; I knew you were going to do the same thing.