I have a friend who, on one of her trips to Germany, took a present over for a friend. She clearly labeled the box it was in Gift to indicate to customs that it was something she was bringing in for someone else. She forgot (she is fluent in German but doesn't translate very well, since she tends to be in one language or the other) that Gift means poison in German. Customs was all over her like a wet noodle on a cheap suit.