Any persons originating from the delta area of northern California, typically displaying distinct behaviors and mannerisms isolated to the region.

A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.

A redneck, like a hillbilly but instead of being in the hills and mountains riverbilly leave near a river.