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 08, 2009

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Top Definition
face. From A Clockwork Orange
My litso was smiling after watching that funny scene
by Bungalow Bill December 21, 2001

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Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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