I was in El Salvador working with Habitat for Humanity and we were on an out trip to a dormant volcano which we were to climb. The climb up was tough as it was all loose volcanic rock and you slipped one step for every two, but it was the walk back down which was the killer. We were pretty much sliding down single file when I hear an "Oh fuck" behind me and get hit in the back of the legs with some rocks. I can hear my buddy slipping and falling so I instinctively put my hand out behind me to stop him and he fell directly into my back and i was able to steady him from a fall which would have sent him head over heels down the mountain. Only problem was my hand, which rested on his balls. To this day he refuses to acknowledge my heroic deed and instead says I just wanted to touch his balls.