This happened the summer after I graduated high school. I had a friend that I was really close with. During the summer I would stay at his house five to six nights a week. We would play pool and watch TV all day, then at night we would just hang around and talk. When we'd go to bed, I would sleep on the floor and he on his mattress which laid directly on the floor instead of on a frame. We would usually lay awake for a long time and just talk about random stupid stuff.
One night, after talking for awhile I was ready to sleep. So it got really quiet for awhile, then he somewhat quietly said my name. I didn't feel like talking so I just pretended to be asleep. He said my name a little louder, and I still didn't answer. Then I heard him roll over and reach behind his dresser. He pulled something out though I could not tell what, because it was pitch black in the room.
As I laid there, pretending to be asleep, I heard the familiar sound of skin rubbing against skin. I thought maybe he was scratching, but when it continued and in a somewhat rhythmic pace, I realized what was going on. He was masturbating. I knew I had two options. One was to interrupt him and ask what he was doing. The second was to just ignore him and let him finish. Seeing as how I masturbate regularly and would hate to have someone interrupt me, I just decided to let him do his thing. It's normal and natural after all.
So there I was, laying awake on the floor, having to listen to the rhythmic sound of my best friend masturbating not three feet from me. Now I am 100% straight, but it would be a lie if I told you that I didn't want to do the same thing. I wasn't turned on by the fact that he was masturbating, but it made me think about doing it and I wanted to rub one out myself. I knew I couldn't right then though because he would know I wasn't asleep and things could get awkward.
After about 10 minutes of this heavy breathing and stroking, I heard him stop. I thought he was done, but apparently he was putting a sock over his penis because he was close to orgasm. This is what he grabbed from behind the dresser I assume. Soon I hear the sound of cloth rubbing, and it went faster and faster and his breathing started getting heavier. Then suddenly he took a deep breath and let out a long, deep sigh of relief. I knew that he had cum. He laid there for awhile, then I heard him roll back over and put the sock behind his dresser.
Now the thought of masturbating was killing me. My penis was as hard as it could get. So I decided I wouldnt be able to sleep. So I waited until I heard him snore a little bit, and I knew he was asleep. So I quietly grabbed one of my own socks, pulled the blanket back over me, pulled my boxers down, and laid on my back. Now as I said it was pitch black, so I wasn't really worried about being seen.
So I pulled the sock on over my rock hard erect penis and began to masturbate. Since I didn't want to make any noise I had to go slow, which is torture when you are already ready to ejaculate. So after about five minutes of this, I felt that familiar sensation that I knew I was about to orgasm and couldnt stop it. And sure enough, I ejaculated a huge load into my sock. I laid there for a little bit in the afterglow of an amazing orgasm, then milked all the remaining semen out of my penis by making a ring with my thumb and first finger and pulling all the way from my testicles to the head of my penis a few times. Then I took off the sock, folded it up and stuck it in my shoe. I quickly fell asleep.