One summer I got the chance to travel to Japan. I was with a group of about 40 but me and three other guys and a few girls became instant friends.
The baths in hotels in Japan are shared by the entire hotel. Our group got a special time during the night to use them though. To describe the bathrooms, there is a wall with stools low to the floor lined up and hand-held shower heads for each stool. You go in sit down, clean up then get into any tub of your choosing. About ten people can fit in one tub. A group of us decided that we were going to do in the traditional way, no trunks, which is what was suggested. Now on with the story.
One night, James, Chris, another Nick, and I went down to the showers at the same time. Once we were all done showering we got into one of the baths. Chris asked if everyone has beat off before and we all said that yes we have. So he suggested that we do it now. Chris and I were already semi-hard and in a few minutes all four of us had solid boners. The hot mineral water made the skin of our shafts pretty smooth.
We all started Stroking and after a few minutes we were all going at it pretty fast. In about ten minutes we all came and most of it just went in the water but some flew up and onto our chests. James scooped up most of it floating in the water and lathered it all over himself.
We did the same thing every night for the whole two weeks. It was awesome.