#BBCtrending: "Americans, this is pointless"
8 January 2015 Last updated at 00:51 GMT
Almost 40,000 people have commented on a thread on Reddit which asked non-Americans to talk about US customs they find strange, pointless or even outrageous.
The way prices are marked in US shops, large numbers of lawyers or obsessive tipping ... it appears the American way is not for everybody.
But for BBC Trending's Random American Guy, all of these things are just common sense.
Video Journalist: Alvaro A. Ricciardelli
That's the Americans, but what baffles the world about the British? Watch our video report on that here