Waking Home From School

My friend and I, who are both 15, live close to each other, and also go to the same school. We are in the same year, year 10 in the British school system. We were walking home from school last summer, through the park near were we live, when he said he needed to pee. So we made our way to the public toilets at the far side of the park. I decided that I'd better go too, so I followed him in. I was quite surprised when he unzipped his trousers and out sprang his hard cock! He then pulled his underpants down, causing the elastic waistband to trap his cock, making it slap onto his belly! And began rolling his foreskin back and forth. 'Come on!' he urged. I unzipped my trousers and pulled them and my pants down in one go, revealing my 15 year old 5' stiff cock! His cock was a bit longer than mine, but mine was a lot thicker. He then began to feel me up and play with my cock, pulling my skin back, causing it to leak precum. We both began to jerk ourselves furiously until we shot our load all over the stone floor of the toilet. We silently put our fast softening dicks back in our pants and left. Walking on home, we never mentioned it again!