Make the cheese more binding! Of course I've heard it, I'm from.....(drumroll) Pennsylvania! I think it's got a Pennsylvania German origin, 'cause my grandparents (who spoke PA German as a first language) used it all the time. I believe I'll start a whole new thread on "Dutchified" expressions like "why don't you hold this awhile" and "the milk is all" and "once't" and "whatfer car are ya drivin?" and ...

Back to the south - I love the variations on y'all. Y'all is singular, the plural is often "y'alls", or in a very large group "alla y'all".

My other favorite is "hamawn" which is short for "I am going to..."