"Today we have Grumps (grim, ruthless, upwardly mobile professionals), Dinks (those with dual-income, no kids), Sitcoms (those with single-income, two children, outrageous mortgages); and, just to recognize the graying populace in this country, Opals (older people with active lifestyles)."
1992, Earl G. Hunt, Jr., Recovering the Sacred: Papers From the Sanctuary and the Academy, Jonathan Creek Press, page 254