At the time, Okies was a catchall term for everybody what was displaced by the Great Depression and the associated drought conditions in the Southwest. Everywhere except in Oklahoma, that is -- where I understand we used the term Arkies...
By definition, an Okie was poor, uneducated and without any redeeming social virtue -- the epitome of "poor white trash".
Never mind that, ten years later, Okies owned most of the businesses in the Central Valley of California...
Hey Okie if you see Arkie
Tell him I got a job for him
Out in California
Diggen oil wells
All he needs is a shovel.
.........