(Pronoun, adj.) equivalent to the words "undead" and "zombie", however, used to describe a zombie which is gay. Also may be used to define a homosexual who has crossed over to the straight world. The word originated one late night at a Dennys in San Diego, 2002, during a topic about independent zombie films.
This town has been overrun by the Ungay! They rose from their graves and started humping everybody!