I was in Peru backpacking, had split with my girlfriend and went out drinking with some people from the hostel. We were in a bar and two French Canadian girls started chatting to me. Towards the end of the night we were all hammered and they invited me back to their private dorm at their hostel. They both sucked me off together, then one sat on my face while the other fucked me. That's my best memory.
Another was my first gay experience. Was doing volunteer work for age action teaching computers to seniors. I got on very well with one of the other volunteers and he asked if I wanted to grab a pint after class. We stayed in the pub all night and he started flirting with me, to my own amazment I got really excited. We were walking back in the direction of both our places when he stopped and kissed me, I ended up giving him a quick blowjob down by the Spanish Arch. That was really exciting, getting heart palpitations thinking back on it. unfortunately that was the first and last time I did anything with a guy