A homesexual male who lives, works, and thinks he's passing as a straight man. Not to be confused with Metrosexuals who are straight men. These gay men have no queer cultural connection other than having sex with men. They can be bi or even married.
Eugene is a total gay straight male. He and his boyfriend watch football, drink beer, dress like slobs, and have no idea about the big queer world.
See metrosexual(which is often misspelled as meterosexual).
Carrie: The gay straight man was a new strain of heterosexual males spawned in Manhattan as a result of overexposure to fashion, exotic cuisine, musical theater, and antique furniture.
Samantha: Well, hopefully he's a gay straight man, which means he's straight, with a lot of great gay qualities.
--Definition taken from "Sex and the City" episode "Oh Come, All Ye Faithful" (1998)
Charolette: I am so confused, is he gay or is he straight?
Carrie: Well it's not that simple anymore, the real question is, is he a straight gay man or is he a gay straight man?