April 16, 1972
I hate to admit ignorance on anything, but right up front I can tell you I had no idea what a darb is, or was. Doing a quick google, though, gave me this:
darb is an Americanism probably nearly obsolete today, a slang word from the 1920s meaning "something or someone very handsome, valuable, attractive, or otherwise excellent." Synonyms of darb: amazing, bizarre, boss, curious, exceptional, fab, fantastic, flash, gnarly, heavy, inconceivable, incredible, marvelous, odd, outstanding, particular, peculiar, phenomenal, primo, rare, remarkable, singular, special, strange, stupendous, surprising, terrific, uncommon, unfamiliar, unheard-of, unimaginable, unique, unprecedented, unthinkable, unusual, weird, wicked, wonderful, zero cool.
I can just imagine the young Kelly using the word and then saving it for 40 some years to drop into this strip.
And ayep, Howland actually got one over on Miggle.