I moved to Canada from Britain when I was about 8, and I was constantly asked:
"Did you ever meet The Queen?"
Yes, of course, every British citizen has tea with the Queen on a weekly basis...
One question that was more rude-persoanl than stupid-personal, was when I announced that I was pregnant, several people asked me "Was it planned?". I just found that..kinda rude and personal, especially as it was coming from colleagues who didn't really know me that well. Basically, it's like they were asking "Did you mean for this to happen, or were you just being irresponsible?". Which is something I would find acceptable coming from my parents or something, not people I see at work and only say Hi to at the coffee machine.