Where are you from/Where do you come from?
Question mostly introduced by waiters trying to prepare you for tipping an already chili-peppered check. Answer:
“From abroad / From my hotel” (bad mood) OR: “You can guess three times, you’ll never find out”
You find yourself in a crowded place and you want to get rid of everybody surrounding you? This is the magical phrase:
“ATTENTION ATTENTION THERE IS NO… I REPEAT… THERE IS NO REASON FOR PANIC… PLEASE STAY WHERE YOU ARE. I REPEAT… THERE IS ABSOLUTELY NO REASON FOR PANIC”
Shouted with both hands as a megaphone to your mouth, it surely works
Aggressive car drivers
The driver you are passing by raises his middle finger. Respond the proper way: smile in a friendly surprised way and continue your way. This guy is going to pain his brain and ask himself who you were and where he does know you from, terribly regretting his move.