I agree with
ManfredvonRichthofen, I recently had 2 Russian ladies on a flight and they were the rudest passengers I have ever encountered. As much as I would have liked to tell them where to go, I just (when walking away for the umpteenth time) paused, briefly closed my eyes and exhaled - other passengers around were watching and several said to me "you must have the patience of a saint" which made me feel a damn sight better than if I had told them to foxtrot oscar (or worse!)
