gay Moses
Someone, generally gay, who has gained notoriety for being a person to whom gay people come out for the first time. The gay Moses leads the newbie, or person who has just realized he/she is gay, through the coming out process, parting the Red Sea - that is, conservative America.
Kevin: Dude, Jon totally just came out to me.
Doug: I told you: you're a gay Moses!
Doug: I told you: you're a gay Moses!