A family from Belgium came in, and the resigned father said "I know the answer is no, but do you have any Mother Goose and Grimm books?"
"Yea," I said. "I have a whole stack over here."
"But...but they are out of print."
"A collector sold them to us." I said.
"They are all under $20 each?" He asked.
"Oh my god. I am from Belgium. I have been to US once before. In Florida I bought one book twenty years ago. Since then, everyone says they can not get them. And my kids love the first book as much as I loved it when I was a kid. I am so happy. I'm from Belgium. It's in Europe."
And I regretted saying "I know where Belgium is." in a tone of voice that suggested one would be an idiot not to know that, because he clearly had dealt with many people who didn't, in fact, know that Belgium is in Europe.
But he and his family left happy. "We will at least have things good to read if it rains for the rest of our trip."
The younger of the two kids even pumped his fist and said "Yes!" as they bought seven of the eight books we had (the eighth being the one they already owned).