I asked my dh about the locker room scenario. He says that from what he remembers he chose to look at the ceiling, the walls, pretty much anywhere, but down. He says that the last thing you want to get accused of is looking at other boy's penises.
I asked my dh (sadly, he's circ'd) wether or not his Dad is circ'd, he has no idea. His parent's are very conservative & private, but dh is sure he had seen his Dad naked, but no real comparison was ever made. I know for sure that our ds, age 12 and modest by his own choice, has never had any reason to compare himself to his father. He has certainly seen dh naked, they pee in the woods together, and used to bathe together. An infant/toddler/preschooler's penis looks nothing like their father's anyway. I can't imagine a father or son asking for a direct comparison after puberty or in adulthood. My ds is well aware of the fact that we chose to leave his body alone & that His Dad was not so fortunate.
My ds homeschools, so he hasn't had time in a locker room. We talk pretty openly & I think he'd say if his buddies were comparing. Especially if it bothered him.
Anyway, I would like to hear what other men/husbands/fathers have to say on this subject. I suppose I should have posted a poll, but this will have to do, feel free to post a spin off poll.