Asklemmy

To name a few:

Calling yourself Americans, after the entire dual continent. There are two continents and many other countries in the Americas, you know... [I know you know. And, what are you supposed to call yourselves, 'USAians'? 'Americans' makes more sense and is easier to roll off the tongue. But it's weird.]

Holding the door open for me. Smiling at me on the street. Those are sure signs of a swindler, but it's the norm in the USA. [I am not suggesting USA folks are swindlers, only that those actions are what swindlers in much of the world use. USA people are generally super nice and a genuine pleasure to be around.]

Turning right on red light. Red means stop. It's weird and confusing.

Edit: I added a third thing.

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The brown paper-bag thing with alcohol in public. I mean, everybody and their dog knows what's in there, right?

And the fact that people ask if you need help if you decide to NOT take the car but instead walk the 5 minutes to somewhere.

Going out in public in your pajamas.

How difficult it is to find fresh produce in small shops (food deserts)

How much fat is in all the meat.

How old and badly maintained many of the roads and bridges are (I am from Africa, so that says something)

The levels of national arrogance.

Signs telling you not to bring guns into shopping centers.

Sizes for clothes, drinks and fries are all bigger than in Brazil. A medium size shirt in the US is easily as big as a large in Brazil. For drinks I would usually groan every time I forgot to buy a small drink since I literally can't drink a medium soda in the US in less than an hour and I hate wasting food.

Being overly fake nice because you want a tip. Tbh I'd be more inclined to tip you if you left me alone and stopped talking to me.

The whole tipping thing in USA is weird. Everyone wants a tip, it's entirely random (as a non-American) how much tip to give. Just pay your staff a wage they can actually live on ffs.

Sweet bread.

OMG. It's bread. Why is it sweet?

As an American, my top realization was... everywhere else in the world yall use electric kettles - Americans frequently only have a stove top kettle like it's the fucking eighteenth century.