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Someone who spends far too much time looking or staring at themselves in the mirror.

Tends to be dancers in a class, or extremely vain girls.
Dance Teacher: Megan! Will you stop being such a Mirror Junky! You do not need to look at yourself all the time while dancing.

Friend 1: Are you going to look in every reflective surface we walk by?
Friend 2: What are you talking about?
Friend 1: You are being a total Mirror Junky
by Abbydoo November 12, 2009
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