No question you see them in almost every busy gym. At my Y there was one especially that stood out. Regular almost every day around noon in the free weights and circuit area. White, maybe 6' tall, very fit but not muscle bound. Mid-40s or so. Always seemed to have the women from young to 40 somethings chatting or exercising with him. I think the word about him migrated from the locker room to the gym.
The show started when he peeled down for a shower and shave. He always wore a jock that bulged out three or four inches from the base of his dick to his balls. When he stripped it fell out, maybe about seven inches and completely soft and close to wrist thick. Nobody else, black or white came close. Well bigger than mine hard.
What was interesting was he was totally self aware without being arrogant. He would spend the better part of 30 minutes between showers, sinks and lockers, socializing and shaving, while others like me were showered and dressed in 10 minutes.
The end of the show came when he dressed, stuffing the monster into well fitting thong or speedo style underwear every time. It may have looked biggest in those tight pouches.
Saw parts of the show many many times. Wanked off to the visual image more than a few.