Listen up, world travelers!
It's pretty much impossible for anyone to travel to another country and fit in seamlessly with the locals. No matter where you go, the customs and practices will never be exactly the same as they are in your hometown, and you're bound to do something that gives away the fact that you're not a resident.
This is especially true of most American travelers. You might think you're doing a great job of speaking the language and blending in, but, well...most likely, you're not. In fact, you're probably doing the complete opposite of blending in.
A recent AskReddit thread asked people to reveal the things that prove someone is an American tourist (besides their accents, of course). Their answers were super fascinating and really covered a lot of different aspects from the way tourists dress to their mannerisms. If you have a trip coming up, this is a good list to study so you hopefully don't embarrass yourself!