Now I'm guessing not a lot people outside of the UK know the word "Codswallop".
Basically, it is an old English maritime word used by fishermen. It refers to the old English tradition of using a wet cod (an English fish common in the Atlantic) to wallop someone around the face.
In most recorded cases of codswalloping, English fisherman have used the technique on French sailors attempting to poach our fish. But during the WWII codswalloping was used during the evacuation of Dunkirk when us Brits were out of ammunition and needed to give the Nazis a bloody good old taste of British fighting resilience.
And believe me there is nothing like an angry English fisherman with a wet cod in his hand. The Germans may have invented the Blitzkrieg but codswalloping takes fighting to a very personal level. When it comes to hand-to-hand combat English fishermen are the best in the world. In fact, it is well known that Captain Birdseye, whose grandfather was a pioneer of codswalloping, has coached the SBS (Special Boat Squadron) and written a manual for both the SBS and the SAS entitled "Codswalloping and Haddock-Baiting in the Armed Forces."
I'll have to explain haddock-baiting at some other time. However, if you’ve heard of waterboarding let me tell you that haddock-baiting takes torture to a whole new level as it is intensely difficult to breathe with a haddock stuffed down your throat whilst being codswalloped around the face and, in cases of extreme torture, the groin area.
And I'm not even going to talk about what Captain Birdseye recommends you do with a pike. But it would definitely make your eyes water.
So there you have "Codswallop": An old English term, which if there was any justice in this world, would go viral.