Top Definition
When a man or Maan recieves fellatio from his partner while playing a video game. In order for this act to be deemed a true gamekin, the reciepent must continue playing the video game, even though he is typically quite distracted. Derived from the terms game and blumpkin.
While I was owning fools in Call of Duty 4 last night, the old lady gave me a killer gamekin.
by [MAAN] VelocityRed8 September 20, 2008

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