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1.
IN the MMORPG World of Warcraft, specifically on the Undermine realm, the Term "Piece of Bitch" or "POB" for short, is used to define any player who succeeds in mundane achievements, fails excessively, or for the most part, does not know how to play their class or the game.
Seyren is a Piece of Bitch

Seyren is a POB

I hate POBs like Seyran
by Simple Sey May 27, 2009
 
2.
A malfunctioning object.
Computer Failing
God dammit this computer is a piece of bitch.
by 13 March 26, 2003
 
3.
50% of skaters.They often wear their sisters pants. They also think they are THE shit, when in reality, they are simply just shit.
"Those piece of bitches think they own the skatepark!"
by Mr. Bmx August 25, 2007