I was about 15, I was on holiday with my parents, my sister,  my best mate, and his sister. It was the summer of 76, and it was really warm. We had all been swimming for a few hours, but then it was time for dinner, and we all had to go back to the caravan to get changed, before dinner. My parents caravan was a 4 berth, and the girls were sleeping in it, so my Dad had pitched a tent for me and my best mate to sleep in.

When we got back to the tent, we took off our swimming trunks, I had never seen my mate naked before, and when I did, I saw that his cock was almost as big as mine. My cock was semi hard, as I had been looking at my sister as she had gone into the caravan, and I had noticed that her boobs had gotten bigger since the last time I had seen her in a swimsuit.

I noticed that my mate, Dave, was semi hard too, but tried to avoid looking at his cock. I started to dry myself, but as I did, trying to avoid looking at his cock, I saw him start to rub his cock, this got me harder. I asked what he was doing, I knew he was wanking, I had done it a few times to myself, he told me he had seen my sisters body, and had to relieve himself. He looked at my cock, and suggested I do the same.

Soon, the 2 of us were kneeling there, discussing our sisters body, rubbing our cocks. I had closed my eyes to try to imagine seeing our sisters, I had presumed he had done the same.

It turned out he had not, I felt something touch the tip of my cock, and opened my eyes, Dave was lying in front of me, on his back, still wanking his cock, but his face was now directlt below my cock, it had been his tongue I had felt touching my cock.

It was such an exciting experience, I lowered my cock towards his face, and he stuck his tongue out to lick my cock. It felt so good, I wanted him to lick it more, but we heard my mum call us in for dinner.

We had dinner, then played games in the caravan for a few hours, all I could think about was what had happened. About 10pm, mum said it was time for us all to go to bed.

Dave and I said goodnight, and went out to the tent. When we got there, we stripped off, it was very warm, and lay on our sleeping bags, naked. Dave's cock got really hard, very quickly, mine took a few rubs before I was as hard as he was. He asked if I had enjoyed what he had done to me earlier, I told him I had, he asked if I wanted him to do it again, I told him yes.

Dave lay in front of me, his face close to my cock, his cock close to my face too. He took hold of my cock and started to rub it. After a few minutes I held and started to wank him too. Dave then started to suck my cock, I thought I was going to cum straight away, but managed to hold off for a few minutes before I filled his mouth with my cum. I did not have the confidence to suck his cock, but wanked him until he came all over my face, a lot going into my mouth.