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The mysterious, previously unnoticed beginnings of a second chin that show up in pictures of you around the holidays. Typically caused by excessive eating and an abnormally high number of pictures being taken of you. Often only noticed in photographs by the owner of the mystery chin.
Despite being the only one to notice her mystery chin, Alice immediately began binge dieting after seeing this year's holiday pictures.
by AwesomedOne December 31, 2009
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