It's been a while since the last one, and since the scheduled program is on hold...
Definition: Fierce, aggressive patriotism.
Origin: In the last half of the 19th Century, the Brits were rather beligerent towards the Russians, and as they were rather full of themselves (having defeated Napoleon, as well as pantloads of people on all continents). In those days, there was a popular song with the following lines, "We don't want to fight, but by jingo if we do; We've got the ships, we've got the men, we've got the money too."
Source: Bothwell, Robert, The Penguin History of Canada, Penguin Canada, 2007