Mitt Romney was on CNN not long ago defending the claims in his campaign ads — "We've been absolutely spot on," he said. Politics aside, the expression had me doing an audible roll of my eyes. I've always associated "spot on" with the type of Englishman who's played by Terry-Thomas or John Cleese, someone who pronounces "yes" and "ears" in the same way — "eeahzz." It shows up when people do send-ups of plummy British speech. "I say — spot on, old chap!"