Before I knew:
Most of the differences in comparative size in the locker room I attributed to everybody being in different stages of puberty. I was bigger than most, some were bigger than me, some were tiny. Early and late bloomers, showers and growers, I thought. I was more concerned about walking around the barracks with a hard-on at 18, not the size of it. Around 22 I overheard my roommate say to her boyfriend, "It's so big, it hangs halfway down your leg!" Mine did not and I had an epic crush on her so I felt terribly insecure and hopeless. A few months later I had a physical, including my first hernia exam. My Dr. pulled my underwear down, paused a moment, then matter-of-factly said, "You are exceptionally well-endowed." He did the exam, told me to get dressed and said, "I did hernia exams at an induction center while I was in the Army, you're the biggest I've ever seen."
After I knew:
Definitely walked out with with a new swagger that has never gone away. A "Speak softly and carry a big dick" vibe. A year later when my roommate moved for school she confided that her boyfriend rarely got hard or lasted very long. Didn't change things between us, made me feel good about myself but kinda sorry for her.
I then moved in with a college buddy who was dating a stripper and he would bring me along to hang out at the club until she got off work. I would get 3 for 1, grinding lap dances from her friends because apparently, she said, "Sometimes I can't tell if guys get hard. You get big and hard!" Girl likes to know she has the power to arouse. The a-ha moment came at the trough in the men's room. No urinals, just a 6 foot long trough just above knee level. The looks I got from the ones who couldn't pee because their dicks were too hard when I drained my 7" semi that was an inch or two longer than theirs were priceless. Surprise, shock, embarrassment, anger, "How dare you bring a dick like that in here!"
After I wore a pair of pants to practice that were so tight my bass sat on my length like it was on a shelf, the singer in our band started bragging about my size. He said, "If I had your dick, I'd never shut up about it! I would fuck everything!" I said, "You're a singer! You already fuck everything, that's why you have unexpected kids!"
After everybody knew:
But he spread the word and I had to deal with curiosity seekers and unattractive size queens. Not anyone I wanted. Some were one-dimensional in both directions. The woman with the big tits who only wanted the big dick couldn't understand how someone could not want her big tits...So what if she's banging on my door at 3am and we've never met before? She has big tits and vodka!
I'm okay with those who just want my dick as long as I want them too.