This happened a few years ago while backpacking in Canada. I had been staying in youth hostels. This was a nightmare being in dorm rooms meant it was very difficult to get in a wank session. It had been nearly two weeks since I had managed to get in a quick wank, my balls felt like they were going to explode.
So another night in a new hostel, this one had mixed dorms. Arriving late I decided I would go to straight to bed. I walk in to the dorm taking one of two bunk beds. One of the beds is occupied by a girl on each bunk both of whom seem to be asleep the other bed has a guy on the top bunk, so I strip down to my boxers and crash out on the bottom bunk, admiring the girl in the opposite bottom bunk she must have been about 18 had long blonde hair she looked so peaceful. I somehow managed to fight the urge not to jerk off there and then for fear of getting caught.
I woke up in the early hours of the morning I think it must have been about four or five in the morning just starting to get light out side, as I lay there I suddenly became aware of a soft moaning coming from the other bunk as I listened more carefully I became aware of a slight squelchy noise, at this I became instantly hard, opening my eyes to have a look I could see the sexy blonde in the opposite bottom bunk was laying on top of the covers in just a bra and panties with her panties pulled to the side and her hand working away at her pussy. I nearly came there and then but managed to hold back some how. I must of made some kind of noise as she suddenly turned her head to look at me still working at her pussy, all I could say was do you want a hand?
I couldn't believe my luck when she said oh yes please, I went across to her bunk; I could see the other bunks still occupied. Within seconds she had my boxer shorts off and had her hand that was covered in her juices wrapped around my cock. I had my hand working at her pussy. I slid two fingers in to her tight wetness while I rubbed her swollen clit, Within minuets I was cumming all over her hand and stomach I thought I was never going to stop. I have never cum so much in my life, seconds later she was enjoying her own orgasm leaking her juices all over my hand, I'm sure we must have woken up the others in the dorm but we just lay there and fell asleep in each others arms.
When I woke again I was in the dorm alone, she had left me a gift as I was holding the panties she had on that were still wet from her juices. To this day I still have those panties and they have never been washed and still carry her sweet scent.