Singular "yez"?

[FRITZ JUENGLING]

This reminds me of the man on trial who says "So what if the prosecution can bring in 2 people who say they saw me do it; I can bring in 20 who can say they DIDN'T see me do it."
I'm really not sure what prejudice I could have with respect to singular y'all.  What difference does it make to me whether anyone says sing. y'all?  All I know is what I was told by my Kentuck colleague.
Fritz

>Otherwise, all either camp has to offer is basically only
>"I personally have *heard* this!" vs. "I personally have *never* heard
>this!" As Jim so wisely notes below, "... we hear and interpret what
>our prejudices instruct us to hear."

>-Wilson
>