NOTE: Before going further and the brickbats come out, let me point out that what I'm describing took place a long time ago in my senior year of high school. I was pretty immature in some ways then and have changed my opinions a lot in the meantime.
I played football in high school. One of the picnic tables outside the "snack shack" was "unofficially" reserved for the varsity football team. I was sitting there one day with my teammates when a kid came up to the window. He was in "theater arts" and, although I don't know whether he was actually gay or not (I later learned he went with a girl in many of the school plays), he would ostentatiously "flame" a lot - you know, the limp wrist, affected mannerisms and speech, etc.
So I stage-whispered "Queer!" loud enough so everyone around could hear. Got a big laugh. The guy turned, singled me out, and, in a clear voice, all mannerisms gone, said, "Well, from what I've seen in the showers, I'm more of man where it counts than you'll ever be. . . Jeff-ie!" (the diminutive of my name, Jeff).
Well, I turned red and everybody burst out laughing, all having picked up on the reference, especially my teammates, who obviously knew the truth of his accusation - that although 6'3" and well-built, hung like a chipmunk. For the next couple days, when I'd walk though the halls or across campus, I was sure any giggles or laughter just had to be about me and what he'd said. Needless to say I learned my lesson the hard way.
Interestingly, I don't recall ever having seen him in the showers, but did see him just a couple days later. He wasn't mammothlyg hung, but certainly at least as big or bigger than most guys. I acted like I hadn't noticed him, but, from the grin on his face, I'm sure he'd seen me checking him out.
PS. Looking back years after, it occurred to me that, since his answer was so well phrased and quickly delivered, he might have thought (dreamed?) about saying something like that for some time after seeing me in the showers and was just waiting for the right opportunity to say it.