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Prison Bitch Syndrome (or P.B.S) originated in prison and was done when a prison bitch would pull down his pants half way to expose his boxers (low riding). This told other guys that he was avaliable.
GUY 1~ When i went to see my friend who was in prison i found out he had Prison Bitch Syndrome!

GUY 2~ Oh crap, i didnt know he was gay!
by MR.MARZIPAN August 25, 2011
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