Slang term for San Bernardino California. People moving into the area from the dust bowl of Oklahoma, Texas and Arkansas shortened San Bernardino to Berdoo.
Berdoo is east of L.A. on old highway 99 going out toward Palm Springs
goat raisins, goat droppings, goat feces, goat poop.
The ground in the goat pin looks like it's covered with raisins, goat raisins.