Game brain
A self-inflicted developmental disabilty of millenials, caused by chronic digital media addiction, and characterized by short attention span, quick frustration, indiscipline, fatigue, and inability to absorb verbal information.
Doctor: I'm diagnosing you with game brain, probably caused by 2,000 hours of World of Warcraft, and exacerbated by 1,000 hours of GTA. I'm writing you a prescription for methadone. With treatment, you may one day be a person again.
Game Brain
the act of receiving a blow job while playing X-Box 360 or PS3
Dude, my girlfriend gave me game brain while i pwned in COD4.
pre game brain
pregame brain is oral sex a guy recieves from a slut or friend with benifits before he gets his crazy night on and poppin.
Whoa girl, you gonna hook me up with some pregame brain?
Brain Game
To receive oral sex as an artistic pleasure from a woman.
Dude I'm telling you, she gets an "A" on her brain game!