My most "interesting" border crossing. Over 5 years ago. During a car crossing at Peace Arch (south of Vancouver), going to Seattle.

The US Customs officer cannot wrap his mind about me being from Quebec driving a BC rental car to go to Seattle, so I know I'm in a bit of trouble. Then he asks what I'm doing in Vancouver and I have to explain that I'm a visiting researcher at the university there. Oh yeah, what do I do research on? I hate that question. I do research on grad students. I tell the guy just that. He erupts in a thunderous laughter like this is the funniest thing he has ever heard. I just wait and smile, thinking: he's going to pull me over and I'm here for the day. But, no! He is still laughing and just waves me off, saying goodbye. I roll up my window and start to roll when he comes out of his cabin running after me and knocks on my window. That's it, he's back to his senses and will pull me over. I stop (!) and roll it back down. He's still laughing and asks: "You know what you should research? You should ask why all grad students have thick glasses! They all do!!" and I say, "Yes, sir, that's a good question."

Go figure.