1 definition by Tracey Berkowitz

A disease-like condition characterized by the intense need to listen to Underoath, specifically their newest album.
Taken from the title of Underoath's newest album Lost In The Sound Of Separation (LITSOS).
EX) "I can't go to school today, Mom, I have LITSOS"

translation) "I have to stay home and listen to Underoath ALL DAY."
by Tracey Berkowitz March 8, 2009
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