Analogous to White Trash, but with a Southern orientation. A person classified as SoGarb could be someone with no college degree who drives a pickup, speaks with a southern accent, refers to people from the Northern US as "Yankees", eats a lot of fatty food, drinks a lot of cheap beer, and carries prejediced viewpoints.
Biily Joe from Alabama drives an old pickup with a confederate sticker on it. He likes getting drunk while watching NASCAR races. Billy Joe dropped out of high school, and speaks very poor English, carrying a strong southern accent and using words such as "y'all" or "aint". Billy Joe is Southern Garbage - or SoGarb.
A native of Indiana that would otherwise be described as a hick. Tends to be very provincial, viewing Indiana as the center of the universe, while reflecting the interests, habits, and dialect of working class people of the state. Politically conservative.
Jim Bob, from Seymour Indiana, is a proud Hoosier who drives a pickup truck with an American Flag waving from it, loves auto racing and basketball, wears a mullet, uses words such as "aint" or "y'all", and considers people from a large city such as New York or Chicago as being weird, un-American big city slickers.