[lunar7 (OP)]

I was trying to explain Entanglement to a non-scientist.
I used an analogy I came across many years ago. I have a pair of socks behind my back, one green and one blue. I hide one in a draw. I reveal the one I have to an observer; instantly he will know what the other sock is.
Is this as good as it gets? Are there any good ideas that can be explained in layman's terms?

[Halc]

I have a pair of socks behind my back, one green and one blue. I hide one in a draw. I reveal the one I have to an observer; instantly he will know what the other sock is.
Is this as good as it gets? Are there any good ideas that can be explained in layman's terms?

That's essentially the epistemological view of entanglement.  As you say, "I reveal the one I have to an observer; instantly he will know what the other sock is".  But this is not to be confused with "I reveal the one I have to myself and instantly the holder of the other sock will know what color it is".  It's still a chance thing from his point of view.

The sock analogy doesn't get into the superposition state since socks don't do that. Hence me calling it epistemological since it's about what each observer knows about the system and not about what the state of the unobserved system actually is.