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The opposite of street cred. An amount of street cred so low as to be negative.
A: I think we should get out of here, this looks like a rough neighborhood.

B: Nah, man. We cool. I've got street cred around here.

A: I don't know, man. With that unicorn backpack on, you might be operating on street deb.
by Doctor Badvibes March 05, 2010