I'm a straight guy, and this is something I think about quite a lot. My best friend all through high school was gay, but I never had a clue based on the way he talked. I found out when he took a stab at it (with fear of potential violence, sadly) and asked me out, hoping I was "at least bi".
My friendship with him led me to a lot of rallies, parades, and volunteer counseling for LGBT people who were living a crappy life due to their sexual preference tied with living in Indiana. My point is that I've intimately spoken with literally hundreds of gay men, particularly about being gay and the "lifestyle".
My verdict...there are some people who are totally "the stereotype", where not a day goes by where it turns off. Very feminine (traditionally, I guess...these things are getting harder to discuss), storing away most negativity/cynicism in order to put on a face and attitude of glee and somewhat extreme optimism. There were a lot of people who introduced themselves to me in the manner being described in this thread, only to "shut it off" when we got to talking about abusive/unsupportive parents or equally serious matters.
I never heard the world "socialect" before this thread, and it makes a lot of sense. It seemed to me that this socialect was a useful way to make themselves identifiable and to find potential mates, particularly in the very limited and potentially dangerous rural areas of Indiana. It seemed less prevalent (as a subconscious act) in people who came from more liberal and understanding areas such as Los Angeles or New York. Of course, each person is different in many ways, and the line between "natural use" and "social/cultural act" can blur.
Not that I'm not a straight ally now, but talking about this makes me miss my years of "actively" being a straight ally. Got some people to catch up with...