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A user on the popular online game, Transformice, whom mostly hangs out in the mini forum called the Cafe. Used to describe a person who's a jerk to new people on an online game. It can also be simply written as 'Miceeater' or 'Mice'.
You should really stop being a jerk to those new people, you wouldn't want to become a Miceeater.
by sausage arms September 29, 2017
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