An Internet slang commonly used to describe the act of leaving a chatroom or quitting a game in extreme frustration or anger (or both, for that matter), usually after the being severely stomped in an argument or crushed in a game. May also be written "rage quit" or "RageQuit".
Although the term is primarily used in gaming, the behavior identified as ragequit can be found in every form of Internet community. MAL is, naturally, no exception.
-Tsun_Pooka ragequitted on the 20th of April 2014