A plan to phase out enemies or people that bother you in three phases.
The three phase plan sounds good, but scientists, government officials, and the healthcare workers that like hearing how heroic they are seem to be the ones who actually think it's a good plan. Nobody is telling dentists, pharmacists, chiropractors, proctologists, gynecologists, or pediatricians they're heroes or saviors, since at a certain point it would all start to sound silly.
Sinewave-formed electricity dat successively produces a different "word sound" --- i.e., "hum", "buzz", "drone", "whine", etc. --- a third of da time.
Usually da power-lines are fairly quiet in dry weather, but rain or drizzle often really brings out da "three-phrase current" status of said slim silvery wires!
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)