Top Definition
when a female gives a male oral sex whilst he is ingulfed in an addictive game of gears of war 3. originated from the two words Blumkin, which means oral sex while the male is realising his bowls, and gears of war which is an Xbox 360 game.
you know when we was playing gears of war 3 last knight, "yes" i was getting the best Gearkin of my girlfriend.
by kiys 2107 February 09, 2013

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