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1. Piece of Shit
2. Parent Over Shoulder
3. Positively Outstanding Service
do I really have to put in an example?
by Enterthedavid June 20, 2005
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1) Piece Of Shit
2) an abbreviation some companies use for Positively Outstanding Service.
If you would clean that POS off the floor, that would really be a demonstration of POS. Hell, I'd promote you!
by Nick D May 17, 2003
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Used as a subsitute for the saying "Piece of shit"

Describes a not so appealing object or person.

Does not always need to have "a" before "P.O.S." in short, you don't need to say "Thats a P.O.S." you can just say, "Thats P.O.S."
"Dude, that chick looks like P.O.S."

"That smells like P.O.S."
by Alan Nguyen December 20, 2004
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