Here in Japan, I've found quite a few people know of American Thanksgiving, probably from movies and other media, or contact with Americans, but of course almost noone knows anything about it, time, season, or purpose. And that's understandable.

For those of you who don't know, it's one of the biggest holidays in the U.S., falling near the end of November. It originated in a single event in U.S. history and as such, it it is a peculiarly American holiday (Canada has it's own version falling on a different day though). It's a time of feasting and celebrating the successes of the year with your loved ones.

It's very important to most Americans, but we tend to forget that it doesn't reach out beyond our borders, so we often assume everyone else knows all about it (we do that a lot, you know). But then again I'm sure we can find similar examples in most countries of the world.

As for the egg thing, I guess it's another American invention, one that became pretty popular here, but hasn't infected everyone in the world yet. I guess you Aussies just got lucky.

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...And that, my liege, is how we know the Earth to be banana-shaped. --Sir Bedevere