I really don't do the gym thing as much as I used to. But when I did, I often got stares-- more b/c of my height. I'm 6'5 and weight 215, with big hands and feet. I think guys are just curious to know if my dick is "big like me". It is.
My dick hangs about 5" soft and it flops when I walk. Even as a teen, I was always in decent shape and I admit that my dick gave me an added boost of confidence. But I didn't show-off or gloat about it. (Most big guys don't have to.) Basically, I consider myself a modest and discreet kind of guy.
However, there are a few times in the locker room when I took great pride in strutting my stuff-- mostly in front of the needle-dick gym braggers and trash-talkers. We all know who they are. They're such assholes, and it's great just to shut them down at ANYTIME.
In the locker room, when my dick flops as I walk to the shower, or when my dick and balls hang down a few inches along side the bench, then the trash-talkers get quiet. I know why, and the silence is golden.