I went for a early morning swim today and there was one other guy there to swimming. I finished swimming and got into the showers. I've showered with other guys before and undressed in front of guys aswell since I've played sports and have been swimming for a year now. I had no problem with him seeing me or anything while I'm on one side of the shower sprout and he's on the other side in front of me. Something I've seen a dozen of times was guys getting a hard on so I was cool with that as well, but what was strange was that he started masterbating right in front of me. I didn't know what to do so I just finished showering and got out. Has that ever happened to anyone?