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Acronym that stands for "Lying, Cheating Piece of Shit".

Used to attack the character of an individual who has been exposed as having betrayed their romantic partner, either emotionally or sexually, and having tried to cover up the fact, often through untruths and/or psychological manipulation.
- I heard you and Greg split.
+ Yeah, he was a total LCPOS so I dumped his ass.
by madoff December 27, 2011