I only go to a commercial gym once a week. So, I will have a tshirt on then peel it back to a tank. In the gym I have no problem with this. Hardly call it showing off. Now out on the street or to events balls games whatever. I tend to be more covered up. I'm not huge by any stretch just get a bit creeped out by people staring. The wife notices it more then I do. People advert their eyes when I look at them. She tells me she see it all the time.

Now dont get me wrong. Clearly if I'm wearing posing trunks I want to me looked at hard by the judges. Wait, thats a different story.