A word gay/bi men use to describe themselves in a cool way that they are closet cases and have no intention of coming out soon. This allows them to maintain perceived heterosexual privilege while engaging in their true sexual desires.
"Are you out?"
"No, I'm totally discreet man. I got a girl...she can't know about this."
"Ah, ok I guess I'll keep looking."
"Not into flamers anyway."
"Who says I'm a flamer just because I'm out?"
"Stereotype. You should really come out man."
An asshole who plays a retribution paladin in World of Warcraft 3.0.2 when retribution paladins were gods of pvp. People would call the smug, gloating paladin a rethole as a leetspeak cutdown to avoid the possibility of being reported for verbal harassment.
I got killed by the rethole during 12 seconds of immunity bubble. Totally fair.