The offspring of a 'redneck' and a 'normal' person. Picture Larry the Cable guy knocking up Sandra Bullock. The ensuing baby will indubitably have innate, annoying redneck qualities from it's father, whilst the mother would try to raise it with class so it has a good shot at succeeding in life. It'd grow up to be a person who, for the most part, fits into normal society, yet still has many annoying redneck quirks. Similar to an interracial child, yet a mix of culture instead of race.
"Yo, little Billy lives in a $300,000 house with his parents, and he goes to the finest prep school. Yet he still blows snot rockets in mixed company, and he fastened the seat back on his bike with duck tape. I haven't met his parents, but my guess is that little Billy is a rednick."