I always love students from abroad after this!
A few years ago, when I was 15, my family hosted a foreign exchange student from Germany. He was then 16 years old. Let's just call him Alex. He would stay with us for 6 months before returning back to Germany.
He spoke very good English, and slept in my room for most of the 6 months; he didn't mind sharing a room with me, and anyway, he wanted to have a good friend. So things went well.
A few days after arriving, we were both preparing for bed. I told Alex that he could sleep in his boxers if he wanted to, as he was still a little bit shy. He said yes, and took his pants and shirt off. I was instantly attracted to his body, and the look of him in his boxers gave me a boner.
I asked him the usual stuff, does he have a girlfriend, does he watch porn, etc. and he answered yes. At this time, I was rubbing my erection through my boxers and Alex could see it. I smiled at him, and he returned that look.
'Do you want to do it?'
'Sure, I said.' I invited him to climb into my bed, as he was sleeping on a mattress on the floor, and we rubbed each other off. He told me some of the techniques he used with his friends back home, and I showed him a couple of mine.
We rubbed each other hard and his strokes of my penis were so satifisying that at one point I almost shouted out loud. Luckily Alex knew and placed his hand on my mouth before I did anything stupid. We continued rubbing each other and I felt his long hard dick start oozing with precum, as I rub the precum all over his shaft to give him some natural lube.
We continued for a few tense but horny moments until I couldn't take it anymore and burst my banks, squirting semen all over my upper chest and some of it even hit Alex's face. Needless to say, Alex came a few seconds later, spilling his cum over parts of his lower chest. It was an awesome experience!
We then went back to sleep. I slept well that night, and was awoken to the wacking sound of Alex rubbing his long, hard morning boner. But then, that's another story!