Fictional story I use to help me along.
I've gone on holiday to Lanzarote for a week without my parents. I meet this other guy there my age and we hit it off really well and become friends.
One day we were swimming in the pool and messing around and it started to get a bit much. The first thing that happened was he pulled my trunks off and pushed me into the pool completly naked and everyone saw everything and I soon got an erection. Oh and if stripping me and pushing me into the pool he started to run off with my trunks. So I get out of the pool and chase after him but he decides to run out of the complex.
But I give chase. And of course by now my erection is as hard as steel.
When I catch up, were on the beach, a nude beach thankfully, and I rugby tackle him and strip him. And there we were, both completely naked with massive boners lying on top of and facing each other. Then all a suden he reaches down and grabs me and starts to masturbate me and it feels so great. He soon starts slapping my balls, then tickling them. Then I feel that build you get, but this time it was different, it was more immense and intense and it felt great and wasn't long before I came in what felt like buckets. I then used my cum and spread it all over him, then did the important thing and wanked him like there was no tomorrow. Then after awhile he seized up and held it for another 5 minutes, but then he came all over me.
This tired us so much that we just rested and feel asleep on top of each other right there and when we woke up it was dusk and we did it all again.