I must say the funniest, 'get your American anger up" stories' I ever heard was a true one, told to me by a Texas born freind whose Dad shipped over to the Eurpoean War (WWII) via England. He was absolutely incensed when he saw the "Welcome Yanks!" signs welcoming the US troops. He was reportedly ready to turn around and go home at the insult. He'd never been mistaken for a Yankee before!