A gaydar is well known as a sence that makes a person able to single out a homosexual in a crowd.

A gaydar detector is a piece of machinary that singles out the person able to spot homosexuals in a crowd.

The form and color of the machinary varies from brand to brand.
Person 1: Hey you see that guy over there?
Person 2: ...yeah?
Person 1: Look at my Gaydar detector
Person 2: The needle is totally pointing towards him!
by Rollo Mungo December 1, 2009
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1. An interesting song by the band The Locust. I'm going to leave it at that. Go read the lyrics, enlighten yourself.

2. Someone who can easily tell if someone is straight or gay/bisexual. Yes, I'm making this up.

3. An interesting name to call your friends for no good reason.
1. OMGZ! Have you heard that hxc song by The Locust? The Captain Gaydar one?

2. You are such a Captain Gaydar. I can't believe Portia de Rossi is a lesbian! How'd you know?!

3. Yo Captain Gaydar, pass the ketchup.
by Brizzleeeeeee June 10, 2006
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It's two close male friend("bros") that are sitting together in a hot tub. But they are sitting five feet apart, because they are not homosexual.
Ay man whats the opposite of gaydar?

Yo man it's when two bros are chillin' in a hot tub five feet apart 'cause they ain't gay.
by entjungferinator3002 February 2, 2018
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A person (most commonly Russian or Persian) who you cannot tell if he/she is gay or straight. it is most commonly used when you think the person is attractive.
1.) that russian is a gaydar jammer, unless he figure skates I will never be able to tell his sexuality.

2.) Damn it Mary, that hotie persian man is eying but he's a total gaydar jammer, he's stylish but it's with things only a persian would think were cool.
by snapmagic April 29, 2009
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What happened when, in a galaxy far far away, the star wars kid finally plucked up the courage to ask out Princess Leyla after years of recovering from the humiliation of being an internet comedy meme and she not only turns him down, but informs him she is not Princess Leyla, but an out of work model who just does the star wars conventions to make money for her law degree. Then, to rub salt into injury, she only dates jocks and especially not internet comedy memes. He vowed off women forever and sought out Jean-Michel Rheault, the villain who so assulted his jedi honor by digitizing the star wars kid tape for the internet to take gay vengeance upon his pert backside.... but things did not gay as planned...
Star Wars Kid: "Hey Luke, I am your father. No that's not it. Hey Rheault, I AM YOUR DADDY. Now pull down those panties and get ready to RECEIVE MY LIGHTSABER!"

Rheault: "Oh shit, it was just a joke. I never knew you'd turn to the dark side DARTH GAYDAR. I'm sorry that you'll never get laid, but this is an exit only path young jedi. Why don't I hire you a hoe and you lose your virginity that way. I can video you again, Star Wars Kid loses virginity! Imagine how many hits that will get! Wow, we can do a whole series of these things with other ungainly chubby star wars fans..."

Star Wars Kid: "Argh... NO..." *runs*

Rheault: "Hey kid! Come back here, the cameras not rolling yet..."
by CockBoss O'WhopperWeiner November 8, 2008
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when a straight guy can tell from a 6th sense that there is a homosexual in the room or place he just walked in

or

when a gay person walks past you and you get the bone chilling feeling that the person was gay
*steve just walks in the room* my gaydar dectector is going off...there are 5 gay people in here. 2 at the bar, 1 is with his girlie friends and the other 2 are OH MY GOD thats fuckin disgusting

*steve walks past a gay dude* that guy tripped my gaydar detector. faaaaaaag
by The Lost Game November 15, 2009
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A kind of "sixth sense" that allows a flamboyantly homosexual man, or masculine homosexual woman, to play up their macho/feminine side upon entering a "gay-unfriendly" area.
Les's gaydar detector was going crazy when she drove to Laramie.
by dachagalluntum November 7, 2009
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