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1. subprime rib
October 29, 2010 Urban Word of the Day
A low quality cut of beef, as opposed to prime rib.
A: How is your steak?
B: This crap is subprime rib.
2. subprime rib
(n.) a less than satisfactory sexual encounter
A: Yo man that chick you brought home was super hot

B: I know, but she had no idea was she was doing in bed, it was a seriously subprime rib.
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