"gob smacked'. Oh, Dear. Once upon a time, I was in business with a Brit (a Yorkshireman, but that couldn't be helped) who was kind enough to explain to me the proper meaning of the word "gob"; he was an otherwise polite & well-mannered fellow, so imagine my relief ;)
While we were at it, I volunteered what "the wife is beavering away in the kitchen" might sound like to an American ear.
Two peoples separated by a common tongue, indeed.
I recently picked-up two postcards from the 1939 NY World's Fair, but I was clever enough to buy the stained ('uncollectable') copies out of the half-a-buck box, to wit:
That last one bears a spooky resemblance-of-inspiration to:
Q/ What *is* that thing in his lap?
Good luck selling those U$D 125 prints on eBay