It was GREAT!
This happened when I was 15. Me and my mom and dad took a trip to Europe for a few weeks. We stayed in a hotel. I like to swim so I was kind of mad when I found out there was no swimming pool. But we found a health club down the street. One evening my parents went to a show. Since I didn't just want to stay at the hotel I decided to go to the health club.
I went in and changed and went swimming. When I got out I noticed a few people walking around naked. They were going in and out of the sauna steam room and whirlpool. A few had erections and they all seemed to have huge cocks. Then I got an erection. Even though I was only 15 my cock was almost seven inches. I was hairy and uncut. I went to the sauna and whirlpool for a while. When I got out there weren't many people still there. I went to the showers. It was one room with about 15 different showers in it. There was nothing separating them. So since I had an erection and there wasn't many around I decided I should masturbate.
A few old men waked in and out and all they did is look and smile so I figured why stop. Then another boy about 13 or 14 walked in butt naked. Just like me he was really skinny. His cock was erect and about six inches. He had so much hair on his cock and was uncut. He had a really tight ass. He went to the shower next to mine. Then he started to masturbate. He knew English so we started to talk. Then he grabbed my cock and I grabbed his. We started to moan and yell. We came all over each other. We did it again and it was just as good. Occasionally a few old men watched.
We met the there again the next afternoon and did the same thing for almost four hours. It was great.