Wasn't nothing like "Oz," a bunch of iron and bars

from Pimp C (Ft. Tom Petty) – I'm Free Lyrics on Rap Genius

Meaning

“Oz” is an HBO-produced prison drama that aired between 1997 and 2003. The show is notorious for it’s depiction of homosexuality among inmates. Chad is saying, the reality of life under lock-down is different than how it’s dramatically depicted on TV shows.
http://www.youtube.com/watch?v=mOBFaSC3004

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