The preference of videogames, boardgames, or any sort of virginity-prolonging entertainment over females.
Used in a similar (although far sadder) fashion to "bros before hoes."
Guy 1 : Hey, do you wanna come to the wicked party a couple blocks away this evening? There are gonna be a lot of cute girls over there.
Guy 2: Nah, I wanna get my dwarven paladin Alvannor to level 80 tonight. Quests before breasts!
Guy 1: Uhh.....alright.