Is turnabout fair play? The Britishism Invasion, Language corruption is a two-way street (By Ben Yagoda in Slate.com)

"...language historian Dennis Baron pointed out recently that Brits have been whining about "Americanisms" at least since 1781, when John Witherspoon coined the term. So it may shock you to learn that British words and expressions have, of late, been worming their way into the American lexicon as much as the other way around. "

Check the graphs...

He's got a blog, Not One-Off Britishisms, and posts this excerpt:

"Advert (instead of advertisement or ad), bespoke, bits (instead of parts), brilliant, called (instead of named), chat show, chat up, cheers, a coffee, cookery, DIY, early days, fishmonger, full stop (instead of period, as in the punctuation mark), ginger (a red-haired person), gobsmacked, had got (instead of gotten), Hoover (as a verb), in future, keen on, kerfuffle, mobile (as in mobile phone), on holiday, one-off, posh, presenter (a television host), queue, sell-by date, shite, short-listed, snog (passionately kiss), sort out, spot on, starter (instead of appetizer), straight away, take a decision, top up, twee, wait for it, wanker, and whilst."

~ Becky in Tucson