Having just returned to the US from another vacation in England and Ireland, I return to one of my favorite topics (which was begun in this thread) to add some new observations:
BRITISH STUFF UNKNOWN IN AMERICA: Milk floats. Gyro accounts. Question time. Fruiterers. Duvets. Electric showers. Pelican crossings. Zebra crossings. Green wellies. Catteries. The Glaswegian kiss. Colliery bands. Onion bhajis. Balti. Nan. Chappati. Lime pickle. Twiglets. Joffa cakes. McVitie's. Christmas pantos. Christmas crackers. Christmas pudding. Christmas number one. Bank holidays. Timers on water heaters. Hover mowers. Teletext. Ploughman's lunch. Crop circles. "Songs of Praise." The page three girl. Lime marmalade. Grapefruit marmalade. Salad cream. Salads without dressing. Cream teas. Cream crackers. Guy Fawkes day/bonfire night. Packs containing 10 cigarettes (or any quantity other than 20).
AMERICAN STUFF UNKNOWN IN BRITAIN: Cheerleaders. Baton twirlers. High school marching bands. Parade floats. Thanksgiving. Pancakes with syrup. Trick-or-treating on Halloween.
SOME THINGS FAR MORE COMMON IN BRITAIN THAN IN AMERICA: Wardrobes. Lever door handles. Tool bags. Paper lampshades. Prime time soaps. Ghosts, or people who believe in them. Charity shops. Wooden matches. National newspapers. Orange marmalade.
SOME THINGS FAR MORE COMMON IN AMERICA THAN IN BRITAIN: Closets. Doorknobs. Tool boxes. Churchgoers. Free munchies in bars. Paper matches. Local newspapers. Salad dressing.
REMARK ALLEGEDLY MADE BY AN AMERICAN TEENAGER IN BRITAIN: "Eeewww! They put squash in their pop!"
I will attempt to explain any of the above topics if requested, but I want to give others a chance to comment first.