After mangling our language for years, Americans are complaining about the invasion of traditional British lingo, says Kath Hinton. New Yorkers always fall for a nice English accent: whenever my well-spoken sister-in-law visits, they trill at her flowing diction and faultless vowels. Coming from Liverpool, I have a trickier time. In fact, I stopped ordering butter after three waiters in one smart restaurant failed to grasp my pronunciation. "Bootta! Bootta!" I pleaded, while my American friends wept with joy at my embarrassment. Now, however, it is the words we Anglo-Saxons use, not how we say them, that is causing a...