I remember back at the end of 8th grade, right near the end of the year, we had a class field trip where all the 8th graders, and teachers all went to the local public pool (it had a couple full sized olympic sized swimming pools, so yea, it held all of us). Anyway, so me and my friends were just standing around in the shallow end of the pool, chatting, and watching people jump off the diving boards at the other end of the pool. Eventually my friend Sara told me she had to use the bathroom, and I said I'd go with her. So we start walking towards the bathrooms, and after about 10 or 20 feet of walking, our feet start to burn like crazy, since it was a hot day in june, and the cement was very hot, so we start running at full speed towards the bathrooms. Of course we screwed up, and ran into the wrong one, and didn't notice, since we were so busy trying to get to the shade. So we walk into what we think is the women's bathroom, and the way it was setup was, there was a walkway into the bathroom, and then an immediate split into either the main changing room, or to the toilets, so we turned into the toilets room, and still had no clue we were in the wrong bathroom. Not only that but there werent any urinals, just like two toilet stalls. So once we finish using the stalls, we decide to go out the door on the other end, since it will shorten how far we have to walk on the hot cement to get to the pool, if we walk across the bathroom for part of the way. So we turn into the main changing room, and its setup with a series of little walls sticking out of the two main sidewalls of the bathroom, that create a bunch of sections, open to the middle walkway, and there's lockers lining these smaller walls. So once we pass the second section, we notice a few naked male classmates, changing their clothes. At this point we run quickly past that, not sure what is going on, and on the left is the shower room, and there were a few naked guys in there, and one of them, who was facing us was our english teacher. It was so embarrassing. His genitals were just swinging around right in front of us. We started screaming and ran out as quickly as possible. The bus ride back was pretty awkward, and we got some weird looks from the guys we saw naked.