HRH Betty;
And you wonder, "WHY", I so happily elevated you to the "Her Royal Majesty-Betty" status? It's VERY, impressive, that you not only had time to go fishing, bake bread AND still had the time to research the history and background of "Plonker"!! BUT! You also beat DSHOCK to the punch, with your search for the word's true meaning, which is no easy task!!
If I wasn't already here in Seaside, I'd surely be in Awe, over your more than capable talents!
However, now that you've brought to light, the fact that "Plonker" is only a "MILD & LIGHT HEARTED" insult I'm going to have to retract it from my list of descriptions concerning The Terror Tuber and certain, other, bread bakers I'm now associated with. I had hopes for the word, when it still meant........." someone who was forever drunk on cheap wine", as it "fit" so well!