Ai este americanos...
A businessman called and had a question about the documents he needed in order to fly to China. After a lengthy discussion about passports, I reminded him he needed a visa. "Oh no I don't, I've been to China many times and never had to have one of those." I double checked and sure enough, his stay required a visa. When I told him this he said, "Look, I've been to China four times and every time they have accepted my American Express."
A woman called to make reservations, "I want to go from Chicago to Hippopotamus, New York" The agent was at a loss for words. Finally, the agent: "Are you sure that's the name of the town?" "Yes, what flights do you have?" replied the customer. After some searching, the agent came back with, "I'm sorry, ma'am, I've looked up every airport code in the country and can't find a Hippopotamus anywhere." The customer retorted, "Oh don't be silly. Everyone knows where it is. Check your map!" The agent scoured a map of the state of New York and finally offered, "You don't mean Buffalo, do you?" "That's it! I knew it was a big animal!"
Fonte Why Americans Should Never Be Allowed To Travel