About ten years ago, I was in a health food store in Germany and had a fair amount of stuff, so I paid with a 100 bill. The woman at the cashier started screaming about me trying to pass off counterfeit money, and she didnt know what kind of country I got my money from (i.e. you dirty foreigner), but I wasnt going to pull my dirty trick on her! I asked what was wrong with the bill and she said you cant fool me, that isnt the signature on the euro paper money.
The European Central Bank had just changed governors, and the new bills had the signature of Jean-Claude Trichet instead of the first governor, Wim Duisenberg. The stupid woman was apparently unaware, even though it was posted in every bank in Germany.
I was rarely so angry, and for the first and only time in my life, walked over to the local police station and swore out a complaint about being yelled at in Nazi style (still a criminal offense in Germany). She wasnt arrested, but the cops did pay her a visit.