We had one huge gym shower in high school. It must have had about 10 shower heads on each side, it was long and wide, terrazzo floors and yellow tile walls. It was a new gym and state of the art, the shower was really cool. It was the kind of open shower that gave me a hardon just thinking about it.
We had a 6 year high school, 7th - 12th. We started gym in 7th grade. I was gay, had no idea. I remember well worried about getting a hardon in the shower, never did, a couple of guys did. Ha, I still remember what many of the guys dicks looked like. I was not conspicuous, but how can you help not noticing them when you have about 20 guys at once in the shower and then the next bunch. The gym teachers also made sure everyone took a shower.
Ha, I would have liked to have dropped my soap several times! LOL! I've always has a fantasy about getting gang banged, not rough, but in a pleasant way. Holding my ankles, spread, a few hot cute guys fucking me in the shower, one after another!