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An acronym for You Are The Bloody One, used in text messaging, facebook, twitter, etc. It is an affectionate call that was probably first coined in the UK.

Should not be confused with YATO, meaning the slightly less affectionate You Are The One.
Person 1: Hey lad, want to come to my birthday party?
Person 2: Hell yes! YATBO.
by hairy hat man April 21, 2010
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