I had discovered masturbation and, as it is a custom in Europe, I had been enjoying a vacation to England to improve my English.
That day, the afternoon was about going to some swimming pool.
Well, there were some really GORGEOUS girls in the pool, either running the slides or just sitting in the bubbles.
To make it short, I had glimpsed quite a few cute babes by the time we had to go back into the changing rooms; and once back in the privacy of my changing room I well, dried myself with my towel, and, of course, started massaging my cock with my hand, thinking of some good babes I had been watching the whole day.
Well, it was wonderful.
But at some time, I heard 'Hey, what is that? Are you jerking off?'
I looked up and there was a friend of mine, my roommate, actually.
I said 'Yes, so what? Go back to getting changed!'
And so he did.
And I was able to drive myself to orgasm (I came into the corner of the cubicle...) AND AT THIS POINT I saw my friend looking at me!!!
Of course we jacked off together later at home...