look up any word, like b4nny:
 
1.
Depression era term for a native Californian; one born in the U.S. State of California.
"I'm a prune picker, but my dad was an Okie."
by neanderthalprimadonna May 16, 2009
 
2.
A Montana slang term for someone from California. Used in a derogatory sense. Many people from California do not know that Prunes are dried plums. You pick a plum.
We saw him in the bar with his new Stetson. We knew he was a Prune Picker because we saw him get out of the Lear at the Bozeman airport.