I met a guy from Florida. Do you know him?
My answer is always: No.
Why they ask it: I suppose they figure the odds of meeting two people from the same place are very low, so they might as well ask.
But if you've never been to the US, and you've only just seen it on a map or a globe, you'd really have no sense of just how gigantic this country is. Really, the US is just slightly smaller than all of Europe, with the US coming in at 3.8 million square miles compared to Europe's 4 million square miles.
Translation: The US is gigantic, and so is every state, except Rhode Island. Rhode Island is tiny.
Related Questions: My friend's grandmother lives in your state, do you know her? I saw something that was filmed in your state; were you there for that? I met another American last week, do you want to meet them?