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1. (Or 'mouse') Acronym for Missing (an) Important Canon Event, and is used when describing fanfiction. It means that the story may use the entire canon universe from the original show/movie/etc, but one crucial event has been left out for plot reasons. Y'know, like undoing the canon death of your main character, and all that. 2. to mice/mouse something: To leave out a crucial fact for one's own purposes/advantages ~walkingparody
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