OK, I'll have to look up Bell's Inequality, having forgotten it by name.
In his book "Speakable and Unspeakable in Quantum Mechanics", he talks about a French guy named Bertelman who always wears two different colored socks.
This looks to be a good online description
http://www.upscale.utoronto.ca/GeneralInterest/Harrison/BellsTheorem/BellsTheorem.html