The Most Obvious Signs That Someone's An American

It's All In The Greeting.

"In Salzburg I went to grab something from the drug store."

"As I was checking out I said hello to the cashier (thinking there was very little difference between how I said it and how Austrians say it)."

"She immediately started speaking to me in English and I asked her how she knew I spoke English."

"She deadpan stared me in the eye and goes 'hellloooo'."

"I just about died laughing since I'm a very stereotypical friendly American that says hello exactly like that."

"One of my favorite memories from that trip."- Ted_Dance_Son

"‘Hey, how are ya?'."- vorifo2709·

"Che Strano"!

"An Italian told me that Americans walk confidently in the wrong direction."- MagazineOk6401

Can't Deny This One...

"They want ice in their water."- gianna_in_hell_as·

Just A Turn Of Phrase

"'How's your day going?;" or 'how are you doing?' in completely random circumstances."- KanyeWest_Official

"Incredibly loud but incredibly friendly."- Caozpox

Sometimes They Do Actually Put Their Money Where Their Mouth Is

"I worked as a cashier in a touristic place in Paris."

" I always recognized Americans because they were kinda friendly to me and they always left tips."- Aterakel

Asking Questions They Don't Want The Answer To

"Retail worker here, not living in the US."

"I can generally spot an American because they greet me with 'hey how are you?"

"And since I usually have the standard 'tired from life' retail worker expression at first I thought they were mocking me so I didn't know how to react."

"Took me a while to realize they weren't really expecting an answer lmao"

"Mind you, might just be my personal experience but it's happened too many times for it to be a coincidence."- 8Eriade8

"When I lived in Spain, the barista at Starbucks immediately knew I was American because how polite I was."

"I asked him how he knew I was American and he told me, 'In Spain, we don’t usually respond with ‘Good, and you.’ Americans are so polite whereas Spaniards will just say ‘Give me my coffee'."

"So, I stopped responding nicely and baristas wouldn’t speak to me in English anymore."

"Culture clash!"

"I just want to clarify and say that my story only really applies to a niche people in Spain."

"This does not represent the whole country."

"Just a few rude bad apples."

"For the most part, people in the country are nice and people in the city too."

"The barista was simply remarking on Americans and our penchant to be overly polite."

"Customer service have to deal with a lot of rude and unkind people, same in America."- Agitated-Coyote768

What Are You Smiling At?...

"The gentle grins you give to strangers if you make eye contact with them as you pass by, at least in the Midwest."

"Was not well received in Germany."- Vkazioa

...And What Are You Looking At?

"Eye contact."

"Maybe a smile and a 'how’s it goin?'"- A_Man_Who_Writes

Keep Your Distance

"How much personal space they give themselves."

"Americans like at LEAST an arm's length."- Zonerdrone

"When You're Not Strong, I'll Be Your Friend..."

"According to the cia- when training to be a spy- you have to unlearn how to lean."

"Americans tend to lean on things when standing still."- chonesmcskidds

It's All About The Volume

"To quote a Latvian woman I met at a hostel: you hear them coming like the thunder."

"More often than not, if they’re talking and laughing louder than everyone else, they’re American."- MCRN_Lopez

The Truth Behind The Grin

"One American I've met was a bit stereotypical in some regards."

"He was on a biking tour from Sweden to Palestine, had an unusual beard, huge white teeth, was extremely friendly and a bit loud, and he literally carried a bucket of peanut butter with him because he said that was the most efficient way to carry energy for his travel."

"I was an intern at a software company that just got bought by a huge American company (Warner I think) and one time some executives were visiting, walked through our office complimenting all the developers loudly and then disappeared again."

"My general impression of Americans I've met in person is that it's difficult to see what you guys really think and feel, because you seem to hide it behind a layer of aggressive cheerfulness."

"So when I see someone radiating that, I expect them to be from the US."- Netcob

Of course, not everyone is ashamed of being an American, and will make no trouble hiding it.

Then again, even if they did, they most likely wouldn't have been able to fool anybody...