I find that flipping the bird doesn't mean much in most places unless it is accompanied by various other pissed off gestures. But here is a question. A number of years ago, a bunch of us were trying to figure out if there was a word that would be understood anywhere you travel. A universal word. There were a lot of ideas, but we finally settled on one word that you can say in any country on the planet and be understood. More to the point, get what you need. There may be others, but we could only come up with one. Any guesses?