One summer night, I was sleeping over at my friends house. We didn't do much, watched tv, played video games, surfed the internet, stuff like that. That night we had decided that it was time we tried masturbating each other. We were all up for it, and so was someone else.
We started slowly getting undressed. We lay down next to each other and grabbed each others cock. We were stroking very gently until we heard some footsteps in the house. It was pretty late that night, so we figured that no one would come up. We got up and looked for our clothes and before you know it my friends Dad is walking in the room without knocking.
We both stood there with our cocks hanging low and our clothes in our hands. He told us that he had heard us from upstairs and that he wanted to know what we were doing. It was pretty obvious that he knew what we were doing because he came down in only little white underwear. I could see his half erect cock underneath them. He walked closer to us and closed the door. He took out his cock and asked us if he could show us a few pointers and told us that he could show us a good time! My friend and I dropped our clothes to the floor and we all went over to the bed. I was jerking off the dad, the dad jerking off his son and my friend was jerking me off. It was a masturbating circle that truly stayed in my mind. That was the best sleepover ever!