A radar detecting the homosexuality of someone or something. Gaydars are not physical devices, rather a small part of the brain used to factor characterisitcs such as voice, actions, excitement and tightness of pantwear together to get a gayreading. gaydars also do not measure any kind of speed, so don't be an idiot and see how fast you can pitch a baseball with it, or you'll lose it.
So you guys, does derek really walk the other side of the sidewalk?
Well, my gaydar on him is through the roof.

I hear Jane bats for the other team.
Hm, she does have a pretty high gaydar.

Tellitubies have the worlds highest possible gaydar.
by Sawyer June 12, 2006
The ability/gift of being able to detect homosexuality in other people.
Woah! Look at that guy. My gaydar is going crazy!
by Bungalow Bill December 05, 2001
GAYDAR. Short for Gay-Radar. The ability to tell when someone near you is homosexual, even if they have given no obvious indications of being so. This is an ability usually possesed by homosexuals and their fag-hags.
It's like Spiderman and his Spider sense. He can just "feel" when there is danger nearby. Gaydar allows you to "feel" when there is gayness nearby.
by Stacy August 06, 2003
A sense that allows for someone to detect homosexuality in another
That one registered a blip on my gaydar!
by Brenna August 08, 2003
Similar to Spidermans Spidey-sense, except where Spiderman's spidey-sense detects imminent danger, a gaydar detects a homosexual nearby, either thru hearing the tone of one's voice or observing the style of their movement, which sets off the realization that this person may prefer members of the same sex. (Being a homosexual, deal with the definition, because most should defend this one!)
My gaydar went off as a man in tight leather pants walked by.
by Khyber Kitsune November 18, 2004
The gift of being able to sense the homosexual vibe.

Extended form : Gay Radar
He's flaming!--Told you there's no stealthing my Gaydar!
by ~SS August 07, 2005
The amazing ability to sense gay or bi (tho mostly the first) by apperence, personality, how they talk, move breathe, practically how they sleep.

Usually the gay/bi ones are always the good looking ones. ie: Nick Lachey, David Beckham, Channing Tatum, Ryan Carnes, Chad Michael Murray

and usually the ugly one's are hetero.
ie: Dick Chaney, George Bush and Bill O Reily (sad isn't it)
Kate: This guy Dave is like a total hottie!
Jeff: Dave? he's gay, my gaydar pinged when i saw him
Kate: ohh thats too bad. who else is gay?
Jeff: Your husband
Kate: Noooo you lie you fag!
Jeff: I slept with him so take that you fat bitch!
by AndreaCow January 28, 2006
A person's ability to tell if a person is gay/homosexual/flamer etc.
Bob - "Man, I swear that guy's gay."

Jose - "He's gay, my gaydar is really good, and your friend steve is also gay."
by b W i t September 03, 2005

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