First-known use in print of 'white bread' as a metaphor occurred 26 years after the publication of this magazine advertisement

 Advertisement from July 1951 issue of Woman's Home Companion

According to Merriam-Webster, the first-known use of 'white bread' as in being, typical of, or having qualities (such as blandness) associated with the white middle class, occurred in 1977.

Other coinages from the same year include:

1. ear candy
2. hanger steak
3. hot second
4. pig out
5. word wrap

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