How do you know that another man is gay? Does he wear a sign that confirms that he is gay? Is there a bank of lockers, specifically reserved for gay men? Does he begin any conversation with, "Speaking as a gay man..."
I have a problem with insecure men, who feel the need to confirm their pathetic, insecure masculinity with:
1.) Bashing any minority, such as gay men;
2.) Staring at my endowment, thinking that I cannot tell that they are doing so;
3.) Feeling the need to walk up to me, and, comment that that person and I look to be the only "real men" in the locker room, then quickly glancing down at my crotch as validation.