To be an annoying person who can never decide if they are Bisexual or just Gay... a personality trait that automatically makes you double-gay.
Chris: "I can't stand that guy Jerry"
John: "Oh, I know!! He never shuts up about how he doesn't know if he's bi, gay straight or what. I mean, look at a Playboy and find out already for shit's sake"
Chris: "Exactly! He's so bi-fagual"