The act of getting so angry with a game that you quit and put in a new, usually completely different game just to make yourself calm down.
Bob: What happened?
Tim: Dan did a rage quit game change. He got so pissed of at the noobs on COD that he took the game out of his xbox, threw it across the room, and put in need for speed
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.