Having been to a few places in my life, here are some of the things I found interesting:
South Africa
Fries: Were known as Chips (yeah, it’s a pretty common difference between countries, but I didn’t know at the time). I tried to buy a bag of the stuff for dinner and the clerk was absolutely dumbfounded. I had to explain how you cut a potato up and then fry it.
Security: Instead of fences or barbed wire or barbed wire, many South African houses (in the richer areas) had electrified fences. Sweet stuff – straight out of Jurassic Park. Try to climb one and you’d get zapped.
Taiwan (having spent several years there, I noticed quite a few differences)
Shoes: Like the Canadians, everyone would take off their shoes when entering a house. There’s usually a tiled (as opposed to carpeted/hardwood) section of floor space right next to the door that you can step onto. Then you’d take off your shoes and either place them on a shoe rack or just leave them on the floor and walk around the rest of the house either barefoot or wearing slippers.
Water heaters: Instead of the big cylindrical things you find in America, the water heaters there were relatively small boxes (about the size of a backpack) that had no tanks. Instead, they heated water as it came through the pipes, a little at a time. They worked about as well as the other kind.
Hot water in the kitchen: Instead of kettles, everyone had electric water boilers that sat on the counters much like coffee machines. It held about a gallon of water that would be kept at near-boiling temperatures (perfect for coffee, hot chocolate, ramen, etc.). If necessary, you could also push a button to bring the water to a boil within a few minutes.
Toilets 1: In a lot of public areas (especially older places), the toilets didn’t have seats. Instead, they were simply small ceramic tubs built into a hole in the ground. You, uh, had to squat down to do your stuff. See this picture. I often had to run from store to store to find a seated one. Believe me, you don’t know how much of a blessing they are until you find yourself needing one.
Toilets 2: Some places, instead of having urinals, would simply have one big wall with water flowing down its side. Everyone would just stand next to each other and piss. Thankfully, they were getting less and less common.
Toilets 3: All public toilet stalls would have doors that completely sealed the stall, much like in a regular house. (As opposed to the public restrooms here which usually leave a little opening between the door and the door frame and also a big gap at the bottom).
Movie theaters: Seats were always assigned with your ticket. You’d choose from the available ones at the moment you purchase your ticket, instead of walking in at showtime and finding an open one. If somebody else is in your pre-assigned seat, you can either ask them to move or get a theater employee to do it for you.
Security: Instead of fences or barbed wire, many houses had broken bottle fragments cemented to the top of their walls. Cheap security.
Food on the go: Instead of hot dog stands, there were a variety of sit-down stands that would sell things like noodles, rice bowls, and other traditional foods. They were usually mobile and would show up at night and the owner would set it up and place the seats out.
Tipping: Was almost always unnecessary. You would never tip for pizza, haircuts, taxis, and most restaraunts except expensive Western-style ones (and even then it’s just added to your bill as a gratuity; you wouldn’t leave money on the table).
7-11s: Were EVERYWHERE. They were as common as Starbucks + McDonalds put together here. They were also localized and sold all sorts of stuff you wouldn’t find in American stores, especially ready-to-eat hot foods of various sorts.
Buses: Followed no schedule of any sort. They just came and went as they pleased (along their routes, of course). Sometimes you wouldn’t see one for half an hour; other times you’d see three from the same route one after another.
Japan (probably deserves a lot more, but I wasn’t there long enough to know):
Toilets: Sometimes came with a small faucet with continually-running water (or, in more recent times, a speaker that mimiced the sound). Supposedly, it was to hide the mask of your own piss.
Bowing: Every store employee who served you would bow when saying thinks.
Vending machines: Were uber beyond belief. They sold everything from soda to hot drinks to ice cream to hot food. There were even some stores with nothing but a bunch of self-serve vending machines. Who needs humans?
Anyway, that’s enough for now 