Refers to a queer male, recently out, who has not fully come to terms with the idea of sex and/or relationships with other men resulting in great frustration and blue balls for their admirers. FOCers are characterized by a unique combination of seductive flirtiness and middle-school flightiness that makes even the most out of men opt to chop off their dicks after a certain period of time.
Gay #1: Have you met that guy that just came out? He's so cute! I'm gonna give it a try.
Gay #2: Dude, he's a classic FOC. It's not worth it.