Never been to a gay bar, but I was once at a regular bar and someone got gay on me. I was a casino runner at the time, and a regular customer of mine came up to me and asked me if I wanted to go home with him and "suck his ****". I didn't take him up on that sparkling offer, and talk about awkward every time he dropped in to gamble while I was working.
I don't blame him, though. I am, after all, me.