That weirdly orange "cheese" in a can is an American novelty often encountered at birthday parties or as a snack.
In America, espresso is diluted with water to make an Americano, a drink that doesn't appeal much to international tastes, so specify "American coffee" when abroad.
Drive-thrus are more common in the US, allowing people to stay in their cars for fast food, coffee, liquor, banking, and pharmacy services.
Americans often microwave water for tea, unlike the rest of the world which typically uses electric kettles or stove-top teapots.
Microwaveable popcorn is a staple snack in the US but is usually only found at special events like carnivals or Christmas markets elsewhere.
A thick, sweet pan of cornbread is a classic American dish that might confuse those unfamiliar with it abroad.
Peanut butter isn't as popular outside the US, where Europeans prefer Nutella, making PB&J and other peanut butter treats rare internationally.
Cornbread-coated hot dogs, known as corn dogs, are a uniquely American treat that is hard to find outside the US.
Marshmallows, graham crackers, and chocolate combine to make s'mores, a classic American treat that can baffle international friends due to the unavailability of ingredients.
Buffalo wings, named for their sauce, are a uniquely American dish that can confuse newcomers, as noted by some comedians.