I did. In college I had a major crush on a very handsome and popular guy. We were friends, but he had so many other people chasing him (of both sexes), that we never hooked up, altho I think he knew I would've liked to.
Fast forward about 15 years. We hadnt stayed in touch very well, but I came to do a short job in his city. We got together for dinner and reconnected easily, which led to a camping trip a few months later -- just the 2 of us on the beach. Of course the crush had worn off, but I still liked him, and the memory of it was still so strong I couldnt help myself: the first night in our small tent, after I was sure he was asleep, I peeled back his sleeping bag very slowly to see his cock. It was nice, not hard, average size, but it was such a thrill. I slowly took it in my hand and I jerked off. He never seemed to stir, and I wiped myself off and went to sleep.
Thinking back on it, it seems likely he wasn't totally asleep....but he never said a thing. Who knows? He had smoked a lot of pot that day and evening (I'm a lightweight). Does anyone know if that wouldve been more likely to really knock him out for a very sound sleep????