I got a nice view in the locker room. I was situating my locker and getting ready to begin my workout session. A guy turns the corner from the shower and walks in my direction with a towel over his shoulder. Nothing on but shower sandals. Naturally I diverted my eyes because I think subconsciously I looks away when I see someone in the nude. As the man gets closer he says "good morning" so I look up and return the greeting. His locker was directly across from me in a small space the way the lockers are situated. I'm still pulling things from my bag and I can see the guy across from me starts toweling off more. I'm sure he toweled off in the shower but I guess he felt the need to towel himself off again. Suddenly I notice that he turns facing me and is he's toweling his dick and balls. He does this for a long time until I look up which by this point I see it as an invitation to watch. He didn't stop. He kept toweling and I continued to watch silently. As he's fluffing his cock, I start to see it get a little bigger with each fluff. He was getting aroused by me watching. I was being aroused by seeing his dick grow before my eyes. His nice flaccid uncut dick went from hanging limp to angling down at a 45 degree angle and the pink head that was once hidden under the long foreskin was now peeking it's head out. This is where the show ends because someone walked into the locker room and took a locker a few feet away so the nude guy turns around towards his locker and tries to conceal his semi erect penis. I imagine had the other guy not walked in I could have seen him fully erect and probably would have watched him cum since he was stroking himself with the intention of getting hard. I'll try to be at the gym earlier so that maybe we can run into each other in the shower.