Masturbating in the Locker Room Shower

My locker room showers are set up with walls on either side of each shower, and a shower curtain that most men don't use, including me.  I get horny when I'm showering in that setting, and because I can face forward, away from the opening, I can actually masturbate while other men are walking by right behind me.  Even when wanking, I don't close the shower curtain.  It adds risk, which I like.   Sometimes, I even edge, and then don't cum.  I wait for my cock to go down a bit, and then when I leave the shower, my cock looks so much bigger than it normally does.  I never ever wrap in a towel, hoping that other men will take a look at my stuff.  It's a turnon to be aroused in the locker room itself, or while I'm standing naked in front of the mirror shaving, with lots of men around, and I have to control myself so I don't get an erection.  There is one man in the gym that I am REALLY attracted to.  Perfect body, perfect cock, gorgeous face.  I always hope he will be there when I am semi-aroused.  It just adds more excitement.