Show Me Yours and I'll Show You Mine

Was checking out at the local Walmart here in Mexico this morning when I noticed the lady behind me not paying with Mexican Pesos but with US currency. So I showed her a crisp new US two dollar bill I had in my wallet (thinking she would be amazed to see such a thing)j. Much to my surprise, she opened her purse and showed me one or more US two dollar bills. Then the elderly Mexican man that was bagging our groceries took out his wallet and showed us his folded up US two dollar bill! That's three of us in the same place carrying around the same "oddity". Or maybe not so odd at all. I still have the two dollar bill I acquired circa 1965 when as a ten-year-old I walked into a bank with two dollars in spare change and asked for a two dollar bill, which the teller exchanged for me.