antigay is what you call a person when they are in a group of the opposite sex. usually applicable to females with male friends. antigays need to possess extreme masculinity or femininity to prevent from being dubbed just gay
joe: hey you guys wanna watch a movie?
bryan: hells yeah im in.
patrick: yeah count me in too!
bryan: so thats just us three? dude thats gay, this isn't highschool
joe: no its cool i marla's commin along too
patrick: sweet antigay!
joe: yeah goodjob her.