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1.
Slang term for people who are stupid, slow or in some way mentally retarded.
The hosts of Unreliable Sources are low bandwidth rednecks.
by UnreliableSources December 04, 2008
 
2.
A slang expression for someone who seems unintelligent or dimwitted. It's intended to be a humorous derivation of the tech term bandwidth.
The low bandwidth bouncer at the door couldn't do the math to figure out if I was of legal age to enter.
by John Roshi October 04, 2003