Most guys aren't bigger than me in the locker room or showers, but occasionally I'll run into someone with my size (5") or an inch bigger. Or sometimes they'll be my size, but above average in girth, which makes me very envious because I'm just average in girth.
I was trying out a new gym last week when I came out of the shower area and an older guy, like in his late 40's, was facing me, and my locker was right behind him. He dropped his towel and started drying his backside and legs with another towel. I'm very respectful in the locker room and I never stare, I'll only look real quick to compare if they aren't looking, like when a dude washes his hair and has his eyes closed.
So this time I was walking in that direction to get to my locker and he wasn't looking up at me. I couldn't help but notice his very flaccid, but also very long penis dangling down as I was walking to my locker. It was the same girth as mine, but at least a couple inches longer than my 5" softie, so I think maybe it was around 7" to 7.5". It was like seeing a longer version of my dick, which caught me off guard. I preceded to get dressed and didn't look again. I felt very envious and regretted looking