Next time you're abroad, watch out for these American habits other countries think are rude. Us Yanks aren't the most popular kids in the global school at the best of times - you don't need to commit a social faux-pas to exacerbate the situation. Whether it's a gesture or word, rude things American tourists do can reinforce the host country's negative perception of Americans, even if you've got the best of intentions. So brush up on these habits or American phrases that are rude in other places and you'll have nothing to fear on your next holiday.