If he is gay, does this mean your gaydar is returning a positive but you are uncertain if the sensor data is correct? Or you know he is gay but just can blurt out "I'm interested in you!"? If it the first (gaydar is broken) then I would suggest talking about known gay clubs/bars - not all the time, but as a hint drop. Like "Ever been to Sonny's?" Now Sonny's bar is not The Buffalo - everybody, including my denying great grandmother who is very straight and narrow and shouldn't know, knows that "those people" go to the Buffalo - Sonny's is the one that most gay men know about, but the straight folk haven't figure out its one of those kinds of bars. Maybe (if you have it in your area) Ask him if he ever watched the comedy routines on that new tv channel called Logo http://www.logoonline.com/ There is some good comedy hours, and I like the click list (music video program) (( Yeah strange for a straight man to watch the "gay channel")) Anyway, what I am saying is select a subject that only gays in your area would be in the know about - identifiers like a certain books store (no not the adult books store, the one that sells GLBT books, coffee cups and rainbow flags) and bring it up in conversation. If he is definitely gay he will know about them and if he has a brain cell he will figure out what you are doing. If he is straight and indifferent about the gays, either he will not know about these places/things or he will know. If he does know and just doesn't care he will say something banal. If he does know and he is one of them homophobic types he will have much to say, all negative but then it will clue you in. Now if the problem is that you do not know how to come out of the closet (no not that your gay, but that you are interested in him) Then I suggest the straight - oops - gayly forward method, that is to just come out and say that you are interested in him. If you can not say it then ask him out on a date. Ask him out for coffee or drinks or a dinner. I do not know where you live but I assume that two men dinning is not assumed to be two gay men dinning - not unless they are both "obviously" gay. Overt or obvious "secret gay signals" have been tried time and time again. Ironically I knew tomorrows fashions for straight men just by watching my gay brother. In my life time I have seen a lot of gay men be the first to do __________ then that becomes cool for straight dudes to wear/do. The funny thing is that the Gays have tried for years to make a signal for other gay men to know who they are. But each time the straight men stole it. Almost as if straight men knew what they were really doing.... It used to be the pocket flag system: http://www.eecs.umich.edu/~srs/hanky_codes.html But by golly as soon as the gay men started "flagging" themselves the straight guys thought it was cool and started wearing their own flags having no idea what color in what pocket meant exactly what. Flags died out in the Gay community, so the gays took to piercing an ear. Not only did straight men take to ear piercing themselves, but they even jumped the gun and started piercing other body parts. The Piercing war has resulted in every part of the body having a hole through it and still you can not separate gay men from the straight men. Gay men did the white t, jeans and black boots... Nine days later straight men were doing it. Gay men took to shaving their heads in support of Hiv/Aids patients... three days later straight men did it. Super short, obviously blond hair. First it was the gays, next month it was the straights. Goatee and Mustache (modern version) Gay... until the straight men adopted it. To make it worse straight men have now started acting gay the so called "metro-sexual". Do you see what I mean? Basically there is no "signal" or secrete code that unlocks the box and lets gay men know on sight if a man is gay, bi or straight. It takes a little trickery and observing the actions/reactions of the other person to see where their interest lies. one easy way to tell is to watch their eyes when people walk by. A lingering eye tells all. If he watches the hot babes walk by or the hot dudes - you will get an idea of where he is sexually speaking.

make sure that your 'member' is firm while your chatting to him ..I am sure that he will see the out line ..and blush

Unfortunately, no. No secret handshake that I'm aware of. Your best bet is to drop subtle hints and see how he reacts. Mention fashion, show tunes, play on the stereotypes.

Very little. In restrooms if a guy begins stomping his feet or runs his hand under a stall wall. He is soliciting he wants sex. Glory holes just offer body parts. If gay, you might go to a gay bar and just walk up with the direct approach and tell the guy he's hot, nice ass or whatever. Not many identifiers. The rainbow symbol used to help but was hijacked by race equality groups The right earring is meaningless. Some symbolism is needed to open the door and be approachable.

no signals will help HE IS GAY