A remark made by an usually arrogant or somewhat stupid person as an insult toward another's sexual orientation being homosexual, when in fact it is similar to a double negative therefore saying only that the person is heterosexual.
Jimmy: "Mike your a gay fag! hahaha"
Mike: "Thanks for reminding me I'm straight Jimmy!"
Jimmy: "I don't get it"
Mike: "You're a tard Jimmy"
guy: Dude, that guy off Nip Tuck turned into a gay fag, didn't he.
girl: He was turning into a tree, so technically, yes.
guy: Lucky..
girl: I think it's time we see other people