The term implies profound cultural naïvete, blind consumerism, and an unquestioning "follower" mindset. Common trappings of the whitebread lifestyle include golf, Kenny G and Enya CDs, SUVs, an irrational fixation on lawn care, Golden Retrievers, nominally Christian religious beliefs, Old Navy clothing, moderate to conservative political views, bad Chardonnay, equally bad espresso, cookie-cutter houses, Bath & Body Works hygiene products, and very white-collar employment.
Though whitebread individuals are usually white, the term is not necessarily racial in meaning - the implication lies more with the blandness, predictability, and banality of plain white bread. Accordingly, "wonderbread" is often used as a synonym.
It's just the race with a food at the end
"Not much, black beans"
"Fuck you, white bread!"
"Fuck you, asian chicken platter!"
"Hows life without _______."
"Awesome man, i'm loving this white bread"