We’d always been close, my being the youngest with my sister Ann a year older than me and John a year older than her. It was my last year at school and I had got pretty obsessed with sex… I’d had a few fucks with girls in my class including one in the school caretaker’s cupboard where we nearly got caught – that had made me even harder than usual and I came loads, I think because I secretly wanted someone to walk in on us!

It was the summer and I used to go around at home quite often just wearing my boxers or trunks. Mum and Dad were away quite a lot – John and Ann had both left home but came back often. This particular day it was very hot, and I was alone at home just wearing my skimpy pants and guzzling some beer. I’d also got some porn on the TV showing a couple of guys fucking a girl. My cock was getting hard and I was wanking it through my pants.

Suddenly I heard John’s voice from behind me… “You dirty fucker – playing with that cock again are you?”

I was startled. He and Ann both had keys but he hadn’t been round for a few weeks. Before I had time to say anything he had sat down on the sofa himself and stretched out. The porn was continuing to play but now one of the guys was sucking the other guy as he continued to fuck the girl.

John said “I could do with some of that myself” and he quickly unzipped his jeans and took out his cock, beginning to stiffen.